A symphony section is a group of instruments that play together in an orchestra. The term can refer to a specific group of instruments, such as the strings, brass, woodwinds, and percussion. In this case, the crossword solutions refer to four specific instruments: MOVEMENT (8 letters), Oboes (5 letters), Celli (5 letters), and Reeds (5 letters). MOVEMENT is a term used to describe a large-scale musical composition, typically divided into several sections or movements. Oboes are a type of double-reed woodwind instrument with a conical bore and a piercing, mellow sound. Celli are a type of stringed instrument, similar to a violin but larger and lower in pitch. Reeds are a type of single-reed woodwind instrument, typically made of metal or cane, and used to produce a range of tones.