Define 'last'. Elbow are on TV right now, halfway through a song. I don't like them too much, but I guess I could live with it.
Before that, I played a Snow Patrol song on guitar, if that counts as hearing it then great! They're my favourite band. I've been listening to them at least 20% of the time over 3 years, so I'd still love them after the year.
If that doesn't count, then... Hokago Teatime. Oh god. I like the songs, but I get embarrassed listening to them in public. I'd just want to curl up into a ball and die if I had nothing else for a year.