Fan base to record melody for God (7)
I believe the answer is:
neptune
'for god' is the definition.
(Neptune is an example)
'fan base to record melody' is the wordplay.
'base' says to take the final letters (the base of the word).
'to record' becomes 'EP' (abbreviation for extended play record).
'melody' becomes 'tune' (synonyms).
The last letter of 'fan' is 'n'.
'n'+'ep'+'tune'='NEPTUNE'
(Other definitions for neptune that I've seen before include "in Holst's suite" , "one of the Planets" , "Third largest of the planets, and sea god" , "Roman god of water and the sea" , "Planet, identified 1846" .)