I can't stand up straight to deliver patter song (3,3,1,6,4)

I believe the answer is:

ive got a little list

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

'patter song' is the definition.
The definition suggests a singular noun which matches the answer.

'i can't stand up straight' is the wordplay.
I cannot really see how this works, but
'i' could be 'ego' ('I' in Latin) and 'ego' is found in the answer.
This explanation may well be incorrect...

'to deliver' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times.

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