Without power, playing Shelley's covers album (10)
I believe the answer is:
helplessly
'without power' is the definition.
I can't tell whether this defines the answer.
'playing shelley's covers album' is the wordplay.
'playing' is an anagram indicator.
'covers' is an insertion indicator.
'album' becomes 'LP' (abbreviation for a long-play record).
'shelleys' is an anagram of 'helessly'.
'helessly' enclosing 'lp' is 'HELPLESSLY'.
Can you help me to learn more?
(Other definitions for helplessly that I've seen before include "Impotently" , "(Laugh) uncontrollably" .)