Guitar and ukulele players have had free
Guitar and ukulele players have had free, community-made tabs for two decades. Singers — the largest group of amateur musicians there is — still hit a paywall at roughly five dollars a song, and two separate r/singing posts ask why with no answer.
What is the idea?
Point it at a recording; it separates the lead vocal, tracks the melody, and lays the notes out against the lyrics — the vocal equivalent of a guitar tab, not a full engraved score.
Why would anyone bother?
The people asking are beginners who correctly worked out that seeing the notes would fix their pitch, then found the material for their instrument is the one kind that costs money.
What is missing today?
Every transcription product aims at full notation for musicians. Nobody has made the deliberately crude, free, good-enough artifact that made guitar tabs win — and the whole reason tabs won is that they were crude, free and good enough.
What makes this one different?
Copy what tab sites got right: user-corrected, crude, instantly readable, free. In Chinese the same gap is wider and the notation is friendlier — 简谱 for the vocal line is exactly the format amateur singers already read, and current 曲谱 sites are paywalled or wrong. Cold start CN = 小红书/B站「简谱 求」「翻唱 找谱」评论区与合唱团、教会诗班群; EN = r/singing and r/karaoke, where the request recurs quietly.
What is the sharpest thing about it?
Source separation good enough to isolate a lead vocal from a finished mix went from research to commodity in the last few years, and monophonic pitch tracking on an isolated vocal is the easy case. The two halves only recently became free.
What could kill it?
Weakest evidence of today's three: both posts are near-zero engagement, so this is an inferred gap, not a loud one. Melody extraction also degrades badly on dense mixes and heavy vocal processing. And the paywall exists partly because publishers enforce it — a free vocal-line product will draw the same takedowns that shaped the tab sites.
Who pays, and for what?
Free and ad-light to build the corpus, the way tab sites did; monetise later on practice features, not on access to the notes.
What is the main risk?
Melody lines of copyrighted songs are contested territory — plan for the takedown regime the tab sites live under, and never host the recordings themselves.
What did real people actually say?
Verbatim from the public sources linked above, not paraphrased: “I wish there was an app or some sort of resource/website I could select a song and it would give me the notes/octaves being sang, along with the lyrics. Like a simplified music sheet, like guitar tabs (but for vocals).” — reddit-post “Why is there no collection of vocalist sheet music like there is for guitar tabs or ukulele chords?” — reddit-post
How much work is it?
about two months of work
Where does the evidence come from?
https://old.reddit.com/r/singing/search?q=%22Why+are+there+free+chords%22&restrict_sr=on https://old.reddit.com/r/singing/search?q=%22Figure+it+out+the+notes+sang%22&restrict_sr=on
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