- Detect and Shift the Key and Tempo of any of your songs!- Download Backing Tracks of different genres and see their chord progression while playing!- Reduce the leading instrument volume in the song!- Guitar/Piano display of 16 musical scales in any key!- Guitar/Piano display of more than 140 chords!- The App gives you control over the Bass/Middle/Treble of the song.- Save the song with your changes: new tempo, pitch and EQ settings! - The App will sort all of your songs according to their key or tempo.- Loop any part of the song! The loop is gapless.- Overlay Guitar scales over any App! This is great for jamming over a track on YouTube.Backtrackit gives you the best audio quality when the pitch is shifted or the tempo is changed. When the pitch is changed, the tempo remains the same due to time-stretching technique. Backtrackit is Superpowered.The App is still under development. Please report bugs so we can fix them.