Nothing unchanged for Nineties band (5)

I believe the answer is:

oasis

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'nineties band' is the definition.
'oasis' can be an answer for 'band' (I have seen 'British band' mean 'oasis' so perhaps 'band' could also mean 'oasis'). I'm not sure about the 'nineties' bit.

'nothing unchanged' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'unchanged' becomes 'as is' (I've seen this before).
'o'+'asis'='OASIS'

'for' acts as a link.

Can you help me to learn more?

(Other definitions for oasis that I've seen before include "Feature of desert" , "Band with Liam and Noel Gallagher" , "British band" , "Place of peace" , "provides refuge" .)

I've seen this clue in The Telegraph.

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