One of the most interesting bands I stumbled across this year at POP Montreal was Brooklyn-based Celestial Shore. The trio tried to jump the shark with every song, and while that might seem like exhausting listening, it created a unique (and highly-structured) framework for their guitar-driven pop songs. There was nothing stiff about their live show either, despite all the time changes and harmonies. They all looked pretty young — I think their potential won me over as much as their set did.
Here's "Hour Minute", off their record 10x.