MIDDLE ROW LETTERS UP-TO A TO K TO USE PIANO. TOP ROW LETTERS UP-TO Q TO I TO USE GUITAR. BOTTOM ROW LETTERS AND SPACE KEY TO USE ELECTRIC GUITAR. P AND O LETTERS TO USE DRUMS . L , 8 ,9 AND 0 KEYS TO USE CYMBALS. AND 1 TO 7 FOR BACKGROUND MUSIC .
Thanks to @ChrissMBinoy.
