11a where there is muck there are groups of musicians (5,5) -----/----s
12a they have teeth but do noty bite (4) c-g-
13a large, as big as a chap (3,5) -l-/-----
17a strange sounding market (6) -n---r
21a prank to mimic james the first in advance (4) -s--
22a fatal middle part (4,6) w-a-/c-n---
25a rare fright with head of clan (6) -i-r-e