Shape second album during split (6)
I believe the answer is:
sculpt
'shape' is the definition.
(sculpting is a kind of shaping)
'second album during split' is the wordplay.
'second' becomes 's' (common abbreviation).
'album' becomes 'LP' (abbreviation for a long-play record).
'during' means one lot of letters goes inside another.
'split' becomes 'cut' (synonyms).
'lp' inserted into 'cut' is 'culpt'.
's'+'culpt'='SCULPT'
(Other definitions for sculpt that I've seen before include "Carve (into artistic form)" , "Shape from stone or wood" , "Carve a statue" , "Oak fruit" , "Create by shaping a material" .)