An approach to early music? (8)
I believe the answer is:
overture
This clue might be a double definition.
'an approach' is the first definition.
(synonyms)
'early music?' is the second definition.
'overture' can be an answer for 'music?' (overture is a kind of music). I'm not sure about the 'early' bit.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for overture that I've seen before include "Musical prelude to opera or ballet" , "eg 'The Hebrides'" , "Opening music" , "Instrumental prelude" , "Orchestral work" .)