Month in travelling circus ok for loud entertainment? (4,5)
I believe the answer is:
rock music
'loud entertainment?' is the definition.
(loud genre of music)
'month in travelling circus ok' is the wordplay.
'month' becomes 'M' (standard abbreviation).
'in' indicates putting letters inside.
'travelling' indicates an anagram.
'circus'+'ok'='circusok'
'circusok' is an anagram of 'rockusic'.
'm' inserted inside 'rockusic' is 'ROCK MUSIC'.
'for' is the link.
(Other definitions for rock music that I've seen before include "Sound with a strong beat" , "Popular entertainment" , "Largely guitar-based genre" , "sound of the sirens?" .)