The recorder is a very social instrument. Many people enjoy playing in small or large groups. Groups often play music that is written for several different sizes of recorder together. Often there is a separate musical part for soprano, alto, tenor, and bass recorders. This covers a wider range of notes, from high sounds to low, than any single instrument could play. Some music is written for a recorder duet (two instruments), trio (three), or quartet (four). These groups are called "ensembles," from the French word for "together." Some people play in recorder orchestras. These sometimes have 50 or 60 players with nine sizes of instrument.