I've never witnessed 90 minutes non stop singing anywhere with City. We're a fairly good set of away fans overall anyway, no real problem. We've been quite fantastic at some places over recent years - Norwich away earlier this year, Blackburn away last year and West Brom away two seasons ago are examples of loads of singing - but 90 minutes just doesn't happen.
We don't need to worry or call to arms for our away support anyway. We're not the best, but we're fairly good. It's our home support that needs improving, we're one of the worst.