What a good site this is! The combined Town Hall Symphoy Hall web site breaks with the NEC Group with a new design that is really useful and looks good too.
It has a number of innovative features for helping you to remember what's on - you may never miss another must-go-to concert, particularly as there is an *.ics feature that works with iCal (and maybe other calendar programs). As well as RSS feeds (if you subscribe to them all right now you will get 162 news items) there is also a cookie driven "my events" listing that remembers what you seem to be interested in and finds more of the same.
Tip of the hat to Created in Birmingham for the information.