Do me a favour and put up money for the show (2,2,5)

'the show' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'do me a favour and put up money' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
'money' could be 'l' (L can mean 'pounds') and 'l' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

'for' is the link.

Can you help me to learn more?