Dance performed while playing instrument on Tube (8)
I believe the answer is:
hornpipe
'dance' is the definition.
(I know that hornpipe is a type of folk dance)
'instrument on tube' is the wordplay.
'instrument' becomes 'horn' (horn is a kind of instrument).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'tube' becomes 'pipe' (pipes are tubular).
'horn'+'pipe'='HORNPIPE'
'performed while playing' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hornpipe that I've seen before include "Lively old sailors' dance" , "Lively jig" , "Obsolete instrument: naval dance" , "Lively solo dance associated with sailors" , "piece of music for an > old dance" .)