Macklemore and Ryan Lewis dropped by the David Letterman show. Unsuspectingly they didn't do "Thrift Shop". No, this time they dropped their hot new single "Can't Hold Us".

This one features Ray Dalton. Unknown to me, I've heard this song on a lot of commercials, and other promos. didn't know until now that it was another Mack jam. It rocks, so check it out and prepare to hear it on KISS FM soon.

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