Recording showing relative simplicity (7)
I believe the answer is:
release
'recording' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'relative simplicity' is the wordplay.
'relative' becomes 'rel' (mathematical abbreviation).
'simplicity' becomes 'ease' (synonyms).
'rel'+'ease'='RELEASE'
'showing' is the link.
Can you help me to learn more?
(Other definitions for release that I've seen before include "record" , "put out" , "loose" , "Prisoner eagerly awaits this" , "Let go" .)