Composer tours English coast (5)
I believe the answer is:
beach
'coast' is the definition.
(I know that coast can be written as beach)
'composer tours english' is the wordplay.
'composer' becomes 'Bach' (Johann Sebastian Bach).
'tours' means one lot of letters goes inside another (to tour can mean to go around).
'english' becomes 'e' (abbreviation).
'bach' placed around 'e' is 'BEACH'.
(Other definitions for beach that I've seen before include "Sloping part of shore" , "Sands" , "Shore between high and low water mark" , "The shore between high and low water-mark" , "Coast" .)