Going for a song and dance did amaze one (1,4,1,5)
I believe the answer is:
a dime a dozen
'going for a song' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'dance did amaze one' is the wordplay.
'dance' indicates an anagram (I've seen this in other clues).
'did'+'amaze'+'one'='didamazeone'
'didamazeone' is an anagram of 'A DIME A DOZEN'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for a dime a dozen that I've seen before include "Very common; of little value" , "Cheap (for Americans)" .)