--- title: All About That Bass: Jimmy Fallon The Roots Meghan Trainor Perform description: Jimmy Fallon, Meghan Trainor and the Roots Perform "All About That Bass" On Classroom Instruments canonical: https://time.com/3273928/jimmy-fallon-meghan-trainor-the-roots-perform-all-about-that-bass/ author: Samantha Grossman article:opinion: false article:content_tier: free article:published_time: 2014-09-05T16:14:31.000Z article:modified_time: 2026-04-13T07:13:00.263Z og:title: Watch Jimmy Fallon and the Roots Perform 'All About That Bass' With Meghan Trainor og:description: Entirely on classroom instruments og:url: https://time.com/3273928/jimmy-fallon-meghan-trainor-the-roots-perform-all-about-that-bass/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt0f8c25e493a9662a/6986a228adae444379544d16/screen-shot-2014-09-05-at-11-14-55-am.png?branch=production&width=727&quality=75&auto=webp&crop=16:9 og:image:width: 727 og:image:height: 409 og:image:alt: Screen Shot 2014-09-05 at 11.14.55 AM og:type: article twitter:card: summary_large_image twitter:title: Watch Jimmy Fallon and the Roots Perform 'All About That Bass' With Meghan Trainor twitter:description: Entirely on classroom instruments twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt0f8c25e493a9662a/6986a228adae444379544d16/screen-shot-2014-09-05-at-11-14-55-am.png?branch=production&width=727&quality=75&auto=webp&crop=16:9 ---  # Jimmy Fallon, Meghan Trainor and the Roots Perform "All About That Bass" On Classroom Instruments > Sponsored content. 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Every edition is assembled by TIME editors rather than generated automatically. by [Samantha Grossman](https://time.com/author/samantha-grossman/) ## Samantha Grossman Sep 5, 2014 4:14 PM UTC  by [Samantha Grossman](https://time.com/author/samantha-grossman/) ## Samantha Grossman Sep 5, 2014 4:14 PM UTC Meghan Trainor’s “All About That Bass” is already [crazy catchy](https://www.youtube.com/watch?v=7PCkvCPvDXk) as is, but last night on _The Tonight_ _Show_, it got the Jimmy Fallon treatment, which took the earworm of a song to a new level. Trainor, Fallon and _Tonight Show_ house band the Roots performed the track on classroom instruments: a xylophone, a triangle, tambourines and even some plastic hand-clapper things. (Hi, Questlove. We see you.) 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