Transcribe by ear, in flow.

Loop a section of any YouTube video. Tap the tempo. Jot the changes.
Then sketch the melody by simply playing along — every pass is a pencil stroke, and the notes you keep hitting become the line.

Free forever. No account, no upload — your work autosaves in this browser and lives inside the share link itself.

How it flows

Loop — drag on the timeline to loop a section. Drag its edges to resize, drag the middle to move, tap anywhere to seek. Pinch (or scroll) to zoom; double-tap to zoom the loop and back out. Hit + save loop to keep it as a named section (verse, bridge, solo…) and jump between them.
Tempo — hit TAP along with the music, then hit 1 on a downbeat. Bar lines appear and loop edges snap to them.
Chords — tap a bar in the chord lane and type (Dm7 G7 = two in a bar). Tab moves to the next bar.
Melody — while the loop plays, just play along (MIDI, the keys below, or your computer keyboard). Every pass is a faint pencil stroke; notes you repeat become ink. Tap a stroke to ink it, tap ink to erase it. Drag ink to move it (pitch & time), drag its right edge to stretch it — hold alt for no snapping.
Keep it — everything autosaves here, and the URL is your save file: copy it to share, bookmark it to keep.

Keys

space	play / pause
[ ]	set loop start / end at the playhead
\	loop on / off
, .	tap tempo · set downbeat
a w s e d f t g y h u j k …	play notes (piano layout)
z x	octave down / up