Is this sentence OK? Or how would you say it?
Someone was a singer before, now she is too old and can't sing anymore. I wonder how she sang.

If I say;
I would like to have heard you sing.

Question

Is this sentence OK? Or how would you say it?
Someone was a singer before, now she is too old and can't sing anymore. I wonder how she sang.

If I say;
I would like to have heard you sing.

Answer

Yes, that is fine.  You could also say 'I would have liked to have heard you sing".