The simplest rule: don't tap on the white tile. The Black&white tiles with great piano/guitar sound makes you feel real!
# No.1 Charming piano, guitar sound effect.
# Fantastic background music
# Classic, Zen, Arcade, Speed, Relay game mode
# Google Game Service support - Challenge your friends on google+
Find more interesting features? Download, play and compete with your friends now!
Added more songs!
Optimization on some devices.