In this book, readers gain access to real scientific data pertaining to the science of sound production, promoting graph-reading, comparison, contrast, and calculation skills. Graphs show data from a Sound Level Meter. These are supplemented with Numerical Analyses and Descriptions of Tuning Systems. The musical instruments in this book include violin, flute, clarinet, saxophone, trumpet, trombone, 5 types of recorders (garklein, sopranino, soprano, alto, tenor, and bass), xylophone, drum pad, cymbals, gong, maracas, guiro, claves, triangle, maracas, wood block, castanets, Tibetan bowl, tuning fork, and voice. In this revised edition, continuous measurement of decibel readings result in line graphs, allowing for more detailed analyses than in the original edition. Bonus Material: Charts comparing tuning systems, instructions on calculating frequencies for different notes and scales, and derivation of the power series underlying just intonation tuning and scales are included.