Group round court extremely elegant (5)

I believe the answer is:

octet

I'm a little stuck... Click here to teach me more about this clue!

'group' is the definition.
(group of eight musicians)

I can't explain the remainder of the clue.

(Other definitions for octet that I've seen before include "Chamber ensemble, a Mendelssohn favourite" , "Lines of verse" , "Group of eight musicians" , "Eightsome" , "A number of musicians" .)

I've seen this clue in The Telegraph and The Sun.

Want a hint initially instead of a full solution? Install my app