What does the cryptic crossword clue "Group of musicians taking back half of joint (5)" mean?

The definition is "Group". The wordplay uses a reversal. reverse of TENON = NONET; definition: "Group of musicians" The answer is NONET.

Group of musicians taking back half of joint (5)

Times Cryptic #28620 | 28 Across | 2023-06-03 flower