what instruments are there in ur jazz band?

I`mn playing in jazz small combo at school. We`ve got a sax, two guitars, a bass, a drum, a singer & a flute.
What for?

well... we have tenor saxes, alto saxes, a barry sax (rock on jess) 6 trumets, trombone and bass trombone, piano, bass guitar, electric guitar, mallets, drumset. and sometimes our director playes bass for a song