Crossword Genius

Cheap excuse to drop tab amidst confusion (3,1,4)

Ross

I believe the answer is:

for a song

I'm a little stuck... Click here to teach me more about this clue!

'cheap' is the definition.
(thesaurus)

'excuse to drop tab amidst confusion' is the wordplay.
I cannot really see how this works, but
'to' could be 'for' and 'for' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Another definition for for a song that I've seen is " Very reasonably".)

I've seen this clue in The Independent.
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