Physics of music and musical instruments

Tufts University has a really good book available online about the physics of music and musical instruments. It’s a nice balance between theory, examples, and hands-on projects.

The Physics of Music and Musical Instruments covers the physics of waves, sound, music, and musical instruments at a level designed for high school physics. However, it is also a resource for those teaching or learning waves and sound from the middle school through college, at the mathematical or conceptual level.