!Slow down the speed of the music - without changing the pitch. Change the speed of the music - from 20% (one fifth speed) to 200% (double speed) without changing the pitch. Wrong key? Change the pitch in semi-tones - at full or changed speed. Out of tune? Adjust the pitch in cents (100ths of a semi-tone) to suit your instrument. Real-time processing - all described above is done in real-time - ju