Small introductory piece of music? (5)
I believe the answer is:
minim
'music?' is the definition.
(type of musical note)
'small introductory piece' is the wordplay.
'small' becomes 'mini' (short for miniature).
'introductory piece' becomes 'm' (I can't explain this - if you can you should give a lot more credence to this answer).
'mini'+'m'='MINIM'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for minim that I've seen before include "Beat" , "Two crotchets in one" , "A note in music, half as long as a semi-breve- it's a palindrome" , "Feature of a score" , "It's a downward stroke" .)