Club Unit Jazz is a term used to describe a type of musical ensemble. It consists of three components: a SET (3 letters), sets (4 letters) and a TRIO (4 letters). A SET is a group of instruments that are played together, such as a drum SET or a string SET. Sets are larger groups of instruments, such as a full orchestra or a jazz band. Finally, a TRIO is a small group of musicians, usually three, who play together. All three components come together to form Club Unit Jazz, a unique and exciting style of music.