Slow down a song. Keep the pitch, or let it drop like a record. Free, in your browser, nothing uploaded.

Drop the song in, pick a speed and leave "Keep pitch" on. The audio is time-stretched rather than played slower: each moment is held for longer while its pitch is left alone, so a song at 75% is a quarter slower and still in its original key. That is what you want for learning a part, because you can play along on your own instrument without retuning.

Played slower the plain way, as a record or tape does, the pitch drops with the speed: −5.0 semitones at 75% and a whole octave at 50%. "Lower pitch with it (turntable)" does exactly that, which is the sound of slowed edits.

For learning a riff, a solo or a fast vocal line, start around 75% and come back up as it gets comfortable; 90% is a good last step before full speed. For transcribing, 50% makes fast runs countable note by note, at the cost of some smearing on drum hits.

Dancers and singers practise to a slower copy the same way. For a slowed edit to post, choose the turntable mode at 80–90%, or use the Slowed + Reverb generator, which adds the washed-out hall reverb that style is known for.

Up to 100 MB per file; the first 10 minutes are used. Slowing down makes the file longer by the same ratio, so a ten-minute song at 50% comes out twenty minutes long. Slowing someone else's song does not change who owns it.