Approach compositions and collapse (2,2,6)
I believe the answer is:
go to pieces
'collapse' is the definition.
(thesaurus)
'approach compositions' is the wordplay.
I cannot really see how this works, but
'compositions' could be 'pieces' ('piece' can be a synonym of 'composition') and 'pieces' is found in the answer.
The remaining letters 'goto' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for go to pieces that I've seen before include "Crack up" , "Fall apart" , "lose it?" , "Become so nervous as to be unable to function" , "Break up entirely" .)