An orchestra instrument is a type of musical instrument that is used in an orchestra. The crossword solutions for the term orchestra instrument include OBOE (4 letters), HARP (4 letters), VIOLA (5 letters), REED (4 letters), TUBA (4 letters), CELLO (5 letters), and Frenchhorn (10 letters). The OBOE is a double-REED woodwind instrument with a conical bore and a piercing, mellow tone. The HARP is a stringed instrument consisting of a triangular frame open on both sides, with strings of varying lengths that are plucked with the fingers. The VIOLA is a bowed string instrument of the violin family, slightly larger than a violin and having a deeper, more mellow tone. The REED is a thin strip of material, usually wood or metal, that vibrates to produce sound when air is blown through it. The TUBA is a large brass instrument with a conical bore and a deep, mellow tone. The CELLO is a bowed string instrument of the violin family, larger than a violin and having a deeper, richer tone. The Frenchhorn is a brass instrument consisting of a long tube with a flared bell and a cup-shaped mouthpiece, having a mellow, round tone.