There was a band on American Idol Season 6 that sang?!

There was a band on American Idol Season 6 that sang?

Does anyone know who the band was that was on one of the last shows as guests?
About the only thing I can remember about them is there were several members but only remember one singing and he was very slim and had a suit on.

I'm not talking about the group that sang acapella.

3 weeks ago
I just found out it was Josh Groban. But does anyone know what song he sang?

3 weeks ago
Nevermind, it wasn't Josh Groban.

3 weeks ago
Thanks for the responses. I found it was Maroon 5 and it's their newest song.

was it Michael Buble?