Classical composer comes after the end of Rolling Stones (6)
I believe the answer is:
gravel
'stones' is the definition.
(I've seen this before)
'classical composer comes after the end of rolling' is the wordplay.
'classical composer' becomes 'Ravel' (Maurice Ravel).
'comes after' is a charade indicator (letters next to each other).
'the end of' suggests the final letters.
The last letter of 'rolling' is 'g'.
'ravel' put after 'g' is 'GRAVEL'.
(Other definitions for gravel that I've seen before include "Small stones for surfacing driveways" , "Grit" , "Small stones on paths" , "Small fragments of rock" , "Coarse sand mixed with small stones" .)