This document provides information on various percussion instruments used in orchestras through individual sections on timpani, cymbals, snare drums, tambourine, bongos, xylophone, bass drum, gong, and conga drum. Each section describes the instrument and includes a short quiz to test understanding. The instruments described are timpani (large bowls with stretched skin heads played with mallets), cymbals (measured by diameter and size affects sound), snare drums (typically 36cm diameter and made of wood/metal), tambourine (frame of wood/plastic with metal jingles), bongos (two drums of different sizes called hembra and macho), xylo