Strike march to have the most popular records released (3,6)
I believe the answer is:
hit parade
'the most popular records released' is the definition.
(hit records)
'strike march' is the wordplay.
'strike' becomes 'hit' (synonyms).
'march' becomes 'parade' (parading is a kind of marching).
'hit'+'parade'='HIT PARADE'
'to have' acts as a link.
(Other definitions for hit parade that I've seen before include "Top-selling numbers" , "list of winners" , "Pop charts" , "Selling CDs" , "Those once charting" .)