CellopediaPractice Room

Slow Downer & Loop Trainer

Upload a recording or paste a YouTube link. Slow it down without changing pitch, and loop the two bars that are actually the problem.

0:000:00
Speed (pitch preserved)
Loop a passage

Using this inside a practice session counts toward your Attention Score.

The practice room wraps your work in a goal, tracks your focused repetition, and closes with a reflection — because 30 focused minutes beats 2 unfocused hours.

Start a focused session

Loop the problem, not the piece

Most practice time leaks away replaying music you can already play. Set the A marker just before the passage that breaks down and the B marker just after it, then let it cycle at 70% speed while you play along. The loop removes the temptation to 'take it from the top.'

Pitch-preserved slow-down, in the browser

Uploaded audio uses your browser's built-in time-stretching, which keeps pitch constant while the tempo drops — no software to install. YouTube playback uses YouTube's own pitch-preserving speed control. Both are free without an account.