Learn a solo or a fast passage by ear: open an audio file, drop the speed to 60%, loop the four bars you are stuck on, and raise the speed as it settles under your fingers.
1. Open a song you own from your computer or phone. 2. Play up to the passage, press A where it starts and B where it ends — the loop starts right away. 3. Lower the speed until you can play along cleanly, then raise it in 5% steps across a few sessions.
The file is opened directly by your browser and is never uploaded. Speed changes keep the original pitch, so the song stays in the same key at 60% as at 100%.
Practising a passage fast and wrong teaches the mistake. Pick the speed at which you get it right three times in a row, then step up. Pair the player with the Metronome when you move from the recording to playing alone, and with the Chord Detector to name the chords you hear.
Does slowing down change the key?
No. Modern browsers keep the pitch when the playback speed changes. Very slow settings can
sound slightly smeared — that is normal.
Can it change the key without changing the speed?
Not yet. Shifting pitch while keeping tempo takes heavier audio processing than this player
does; for now, use a capo or the Transposing Instrument calculator to play along in another
key.
Is my file uploaded?
No. It is played straight from your device; nothing is sent to any server.