Musical roundabout (8)
I believe the answer is:
carousel
This clue is a double definition.
'musical' is the first definition.
(I've seen this before)
'roundabout' is the second definition.
(I know that roundabout can be written as carousel)
(Other definitions for carousel that I've seen before include "it's located in 'Arrivals'" , "Luggage conveyor belt and fairground ride" , "Musical, roundabout" , "Musical - merry-go-round" , "magazine for circulation" .)