Really good pop group ditching name (3)

I believe the answer is:

bad

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'really good' is the definition.
'bad' can be an answer for 'good' (thesaurus). I'm unsure of the 'really' bit.

'pop group ditching name' is the wordplay.
'pop group' becomes 'band' (I've seen this before).
'ditching' suggests deleting specific letters.
'name' becomes 'n' (common abbreviation e.g. on forms).
'band' with 'n' taken away is 'BAD'.

Can you help me to learn more?

(Other definitions for bad that I've seen before include "Ill" , "Wicked" , "Rotten, evil" , "Harmful" , "Spoiled or evil" .)

I've seen this clue in The Independent.

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