Making Music with the NXT
by Damien Kee
Looking for new and exciting activities to extend your LEGO MINDSTORMS NXT system? This book will take you, step by step, through the construction and programming of a variety of fun and engaging musical instruments. Each chapter addresses a different way to make music, and provides suggestions for further projects.
Chapters include:
Onboard speaker
Rotation Sensor
Ultrasonic Sensor
Percussion Instruments
Drums Trumpet
Complete building instructions for the Trumpet and Xylophone player
You can read more about the book
here.