Without power, playing Shelley's covers album (10)

I believe the answer is:

helplessly

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'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" .)

I've seen this clue in The Times.

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