TopLine is being built to mix and master vocals, only vocals, to the standard of a finished commercial record. You send a raw vocal and the beat. You direct in plain words. You get a record back.
The name is the product. In a song, the topline is the lead vocal, the part everybody actually hears. TopLine is the engineer for that one part.
Honest stage report: TopLine is a concept in development. There is no product yet, no users, and no revenue. The company is new; the problem is not: years of the founder's own catalog sit behind it, and the approach has been in development for over a year. Nothing on this page claims otherwise. What exists is the problem, a catalog of songs to prove the fix on, and the plan below.
This is Confide, from Razi's album Angels & Demons (2023), in three stages. The raw vocal chains he recorded at home in December 2022. The same vocal after his engineer worked on it, printed without the beat. And the finished record that was released. Listen to the distance between the first stage and the last. That distance is the gap this project exists to close, and every step of it is human work.
Confide as Razi recorded it in December 2022: three vocal chains, a top chain, a bottom chain, and ad-libs, stacked and played together at unity. His own recording, in his own room. Nothing has been added and nothing has been cleaned up. This is what an engineer receives.
The same performance after Andrew Morrell mixed the vocal, printed from his session without the beat and returned in February 2025. Every decision in the craft section below lives in the difference between this file and the first one: the tuning, the EQ, the compression, the space.
The finished record: the mixed vocal seated in the beat, mixed and mastered, and released on Angels & Demons in 2023. This is the standard a bedroom vocal has to reach before anyone calls it a record.
The gap, measured: the distance between stage one and stage two was measured off these files, not guessed. Pitch: the raw take sits a median of 22.2 cents off the note grid, and the mixed vocal sits 8.4 cents off. Air: the mix lifts the top end to about +10 dB at 16 kHz. Space: a dark reverb that lives in the midrange and keeps ringing after the voice stops. Judgment leaves numbers behind. Learning to choose those numbers is the whole job.
What this is not: none of these three stages is TopLine output. This is the human work TopLine has to learn: a take, the engineer's decisions, and the record they became. TopLine does not exist as a product yet, and nothing on this page carries a label it has not earned.
The plan is to close that gap in one session. The route today is the one this project exists to replace: months of waiting on one engineer, who also holds the only copies of the project files, and a result that can still come back needing human work. The TopLine route aims at the same reference target every time, reached in one sitting, with revisions directed in plain words.
The test is already designed. The same raw vocal and the same beat go to a working genre engineer and to the prototype, loudness matched before judging, and working producers and engineers score both mixes blind. The bar is win or tie on preference. The protocol and the results get published either way, and the full protocol is Step 04 of the plan.
Nothing makes it sound professional and Hollywood. It always comes back muddy, or fucked up, or okay. And okay still needs human work.
The founder, on every tool he has tried
The song is written and recorded, then it sits. The founder's engineer has held songs for nine months to a year at a stretch, and gone silent for weeks at a time. The record moves when he moves. Until then, nothing moves.
Mixing is priced per song, and professional engineers charge hundreds of dollars for a single one. The founder's engineer sat at the cheap end of that market, and the cheap end still cost him a year of waiting. Price was never the only problem.
The artist becomes the project manager of his own bottleneck. Checking in. Following up. Asking where his songs are. Spending the relationship, message by message, to get his own record back.
The engineer holds the only copies of the project files. And the quality of the finished record rides on one person's week: his health, his mood, his other clients. When he stops, every song he holds stops with him.
Hear something wrong and the fix is another round of messages, another wait, and a little more goodwill spent. Artists learn to stop asking. They release records they can still hear problems in.
The tools that exist make a file louder or cleaner overall. The vocal itself still sounds like a bedroom: muddy, buried, or polished in the wrong places. Close still means hiring a human to finish it, which saves nothing.
Underneath all of it sits one fact. The judgment that makes a vocal sound professional has never been written down. It lives in engineers' heads, built up one reference record at a time, and nobody has turned it into a system. It has never been written down because the evidence for it was never collected: the pairs that would teach it, a raw vocal beside the finished mix of that same vocal and the settings that got from one to the other, exist only inside private studio sessions that share nothing. TopLine exists to write it down.
Mastering is math: loudness and frequencies you can measure. Vocal mixing is taste. Hundreds of small judgment calls. How dry. How upfront. How much tuning before the character dies. That judgment is what engineers charge for, and nobody has automated it.
Two more reasons the lane stayed open. The training data this job needs, raw vocals paired with the finished mixes of those same vocals, sits locked inside studios that share nothing. And the big audio companies built for professionals, never for bedroom artists. The tech to close the gap only just arrived.
A professional vocal mix is a chain of decisions, and every link is a judgment call. This is the whole chain, in the order an engineer runs it on a commercial hip hop or R&B record. Read what the machine has to learn, stage by stage.
The engineer inherits whatever the room and the microphone actually did. The first decision is how much of the job is repair. A bedroom take needs the repair half of the craft before the taste half can start.
One lead gets built from many takes, phrase by phrase, sometimes syllable by syllable. The call is continuity: a rougher take that holds the feeling beats a cleaner take that breaks it.
Phrases get nudged toward the groove, edits get faded clean, and breaths get lowered instead of deleted. How tight is a genre call. Breaths kept low read close. Breaths removed read edited.
How much correction, at what speed, on which notes, before the character dies. In hip hop and R&B the amount is an identity decision before it is a repair decision.
Clicks, plosives, hum, room, noise. The professional discipline is restraint: over-cleaning strips consonants, breath detail, and life along with the damage.
Mud and boxiness come out, harsh resonances get hunted down, and the voice gets shaped against a target. The reference record supplies that target, section by section.
Stages of compression with different jobs: one catches peaks and hard consonants, one levels phrases smooth. Too much, and the performance goes flat and the room comes up with it.
Only the sibilant energy gets compressed, by an amount set per voice and per microphone. Bright and intelligible on one side of the line, dull on the other.
Harmonics added as an insert or blended underneath on a parallel path. Done right, a vocal reads louder and closer on small speakers. Done heavy, it reads fuzzy and harsh.
Every line's level against the beat, written section by section: hooks larger than verses, quiet lines kept intimate, every lyric intelligible. Engineering on the surface, arrangement underneath.
Plate, hall, and tempo-synced delays on separate returns, ducked under the dry lead. At low level it is glue. A delay throw on the last word of a hook is a production event, and somebody decides where that line sits.
Doubles are second performances, never copies, aligned tight and tuned tighter than the lead. Ad-libs get placed in the gaps and treated harder. Verses stay single so hooks have somewhere to lift.
The vocal gets seated against a beat that was finished before the vocal existed, usually a two-track the artist bought or leased. Where the beat masks the words, it dips, dynamically and by a little. There is a ceiling here and it gets named: no system can rebalance instruments inside a finished stereo file. The honest claim is the best seat a vocal can get, and stems, when the artist has them, raise the ceiling.
Final loudness, true peak, and translation checks on earbuds, phone speakers, and cars. Loudness itself is a genre posture. This is also the one stage machines already solved, years ago, which is why mastering tools are everywhere and vocal judgment is nowhere.
Pitch in cents. Onsets in milliseconds. Resonance peaks, sibilance energy, loudness, true peak. Every one of these can be extracted from audio today. This part of the craft is close to solved, and TopLine treats it that way.
How bright a current hip hop lead sits. How wet a hook runs. How tight the grid gets. Nobody writes these down either, but they repeat across records, so they can be learned from enough of them, with the reference record as the target.
The emotion inside a comp. The size of a hook. How much of the singer's character correction should keep. This kind belongs to the artist. The product asks about it and learns it from that artist's revisions. It never gets hard coded.
TopLine is designed around that split. The first two kinds get automated. The third kind gets a conversation: the direction interface below, where the artist says what they hear and the system does the engineering underneath.
Artists already do the creative half of this job every day. You listen, you hear what is wrong, you say it. TopLine is built so that saying it is the whole interface.
Upload the raw vocal and the beat. TopLine is built first for the bedroom studio: a mic, a laptop, a treated-enough room. That is the setup independent artists already record in, and the exact point where their records stall.
Give it a reference: a released song whose vocal sound you want. TopLine aims at real records, matched section by section, not at a preset's guess of one.
More upfront. Drier. Less tuning, keep the character. Direction, not settings. TopLine translates taste into the hundreds of small calls underneath.
The record comes back, you listen, you answer, it revises. The revision loop is the product. It ends when you say the record is done.
Tap the notes you would give an engineer. This is a working sketch of the product's core interface, the direction language TopLine is built around. It renders no audio and changes no file. It shows the artist's whole job inside TopLine: listen, and say what you hear.
No notes yet. Give it direction.
The first artists TopLine serves record at home: a dry vocal take, a beat, and one reference record they want to sound like. Hip hop and R&B vocals carry the heaviest conventions and the most reference-driven sound in music, and the market is small enough to own. One market, proven properly, then the next.
A subscription for artists who need finished records every week, plus TopLine plugins of our own for the engineers and producers who want the engine inside their own sessions.
The hardest input there is: phone mic, room echo, compression baked in. The day a voice memo comes back as a record, every phone on earth is a studio.
TopLine gets built in this order, in the open. Every step names who owns it. This page gets updated as each one lands.
This site goes live, and the project runs in the open from here: the problem, the test bed, and every step below, published as they land. Razi owns this step. He built the site, and he answers for the project.
Razi preps the test bed himself: his own catalog, more than 100 songs, as raw vocal and beat pairs. The build team takes shape alongside it: an audio ML engineer leads the technical build, with contract DSP and ML engineers carrying the prototype in the meantime.
The engine takes hip hop and R&B vocals only, and learns the judgment calls: tuning with taste, balance against the beat section by section, doubles and ad-libs placed as arrangement, space used on purpose. The audio ML engineer builds it, with contract support. Razi directs every pass against his own catalog and judges what comes back.
This is the project's proof, and it is designed to be believed. The same raw vocal and the same beat go to both sides. The human side is a working engineer with credits in the genre, paid his normal rate, working in his normal tools, given the same reference record the system gets. The machine side is the prototype with the reference loaded and no hand-tuning. Both mixes are loudness-matched before anyone hears them, because louder wins lazy comparisons and every professional in the room knows it. Working producers and engineers judge blind, order randomized, and answer three questions on each pair: which do you prefer, which do you believe is the human mix, and would you release yours. Win or tie on preference is the bar. The protocol, the audio, and the results are published either way. A test published only when it wins would be marketing. A test published on a fixed protocol is evidence. Razi runs the test.
Inside the first genre, the bar gets harder: the system has to match the vocal sound of two or three named commercial reference records, section by section, on real songs from the test bed. Razi judges every pass against the records he pointed at.
Ten to twenty independent artists, recruited personally from the founder's own community, mix real songs they actually release. One working mix engineer or producer joins as an advisor. Their feedback trains the revision loop.
Genre by genre outward, and the recording source gets rougher: phone vocals, room echo and all. The end state is a voice memo coming back as a record.
Three doors, one engine. Per-song pricing for the artist who releases a few tracks a year, priced at a clear fraction of the human engineer, who runs from about 25 dollars a song at the budget end to several hundred a song at the professional end. Subscriptions for the prolific artists, camps, and indie labels who mix every week and carry the biggest engineer bills. And TopLine plugins, the same vocal judgment packaged for the engineers and producers who do mix and want the engine as their starting point.
Razi Ismail is a recording artist from Wayne, New Jersey, in the New York metro. He started in his teens. Lyricist first. Then a vocalist, self-taught, who learned to sing by doing it badly until it was not bad anymore. He has written and recorded more than 100 of his own songs, and most of them are still waiting on the step this company exists to replace. His engineer has held songs of his for nine months to a year at a time, and he holds the only copies of the project files.
He does not produce. He directs AI production. His working days run the same way this product is designed to run: directing AI systems to a quality standard, listening hard, and iterating until the output is right. In the last year, solo, with no investors and no employees, he has shipped five live products: a daily news product, a social gaming platform, shift coverage software a real restaurant operator runs his business on, a complete web game, and a storefront business. A creator marketplace is in build now.
He left college in 2022 and has been building ever since. TopLine is the company his own catalog has been asking for, and his catalog is the test bed it gets proven on. The archive behind that test bed has been recovered and verified file by file: seven of his songs now survive complete, raw vocal chains beside the engineer's finished work, and 27 titles carry an engineer mix or master on disk. The three files at the top of this page are his at every stage: his voice in the raw take, his voice in the mix, his voice on the released record. Nobody else building in this lane has a catalog of 100-plus songs of their own, recorded and waiting.
He is the user, and he is the channel. TopLine's first distribution is Razi's own artist channels and his own catalog: his releases are the proof, and the artists who follow his work are the first door. The first outside users are the 10 to 20 artists in the test group, recruited by him personally.
“The world's changing and AI vocals are taking over. This is a form of humans competing whilst aiding the AI revolution.”
Razi, on why this company, in his own words. Part of the labels' power has always been that professional sound costs money and access. Remove that cost, and artists stop renting a finished sound and start owning their output.
TopLine is in development, and the work runs in the open. If you record at home and want to hear when the first test group opens, write to the founder. Artists in that group will mix real songs they actually release, and their feedback shapes the revision loop.
If you mix records for a living, the blind test needs judges: working engineers and producers willing to hear two mixes of the same vocal and say which one is human. That is product testing. Your ears help decide whether the prototype passes.
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