COMEDY
09/05/2014 10:07 am ET Updated Sep 05, 2014

Meghan Trainor, Jimmy Fallon & The Roots Sing 'All About That Bass' On Classroom Instruments

Jimmy Fallon has already performed songs on classroom instruments with Idina Menzel, Robin Thicke and Carly Rae Jepsen, but his latest rendition of "All About That Bass" with Meghan Trainor and The Roots will definitely make you all about this vid. 'Bout this vid. No treble.

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