Live With Carnegie Hall gives you free concerts of great performances.
Live With Carnegie Hall
Seat Geek
Cool Site - Seat Geek - One of the Web's largest event ticket search engines for events like concerts and sports.
Songkick
Songkick allows you to organize and track your favorite bands, their concerts, and tour dates.
SwitchCam
An awesome site that collates the best concert footage (political events and conferences) from the web and creates a space where you can discover, watch it, and share it with your friends.