Jimmy Fallon Meghan Trainor The Roots Sing All About That Bass W Classroom Instruments

Media Summary: Pete Townshend and Roger Daltrey of The Who join Idina Menzel stops by the Tonight Show Music Room to perform the Oscar-winning song "Let It Go" from Disney's "Frozen.

Jimmy Fallon Meghan Trainor The Roots Sing All About That Bass W Classroom Instruments - Detailed Analysis & Overview

Pete Townshend and Roger Daltrey of The Who join Idina Menzel stops by the Tonight Show Music Room to perform the Oscar-winning song "Let It Go" from Disney's "Frozen.

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Jimmy Fallon, Meghan Trainor & The Roots Sing "All About That Bass" (w/ Classroom Instruments)

Jimmy Fallon, Backstreet Boys & The Roots Sing "I Want It That Way" (Classroom Instruments)

Jimmy Fallon, Adele & The Roots Sing "Hello" (w/Classroom Instruments)

Jimmy Fallon, Carly Rae Jepsen & The Roots Sing "Call Me Maybe" (w/ Classroom Instruments)

Jimmy Fallon, Ed Sheeran & The Roots Sing "Shape of You" (Classroom Instruments)

Jimmy Fallon, Metallica & The Roots Sing "Enter Sandman" (Classroom Instruments)

Gwen Stefani, Jimmy Fallon and The Roots Sing "Hollaback Girl" (Classroom Instruments)

Sheryl Crow, Jimmy Fallon & The Roots Sing "All I Wanna Do" (Classroom Instruments)

Jimmy Fallon, The Who & The Roots Sing "Won't Get Fooled Again" (Classroom Instruments)

Jimmy Fallon, Idina Menzel & The Roots Sing "Let It Go" from "Frozen" (w/ Classroom Instruments)

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Jimmy Fallon, Meghan Trainor & The Roots Sing "All About That Bass" (w/ Classroom Instruments)

Jimmy Fallon, Meghan Trainor & The Roots Sing "All About That Bass" (w/ Classroom Instruments)

Meghan Trainor

Jimmy Fallon, Backstreet Boys & The Roots Sing "I Want It That Way" (Classroom Instruments)

Jimmy Fallon, Backstreet Boys & The Roots Sing "I Want It That Way" (Classroom Instruments)

Backstreet Boys join

Jimmy Fallon, Adele & The Roots Sing "Hello" (w/Classroom Instruments)

Jimmy Fallon, Adele & The Roots Sing "Hello" (w/Classroom Instruments)

Adele joins

Jimmy Fallon, Carly Rae Jepsen & The Roots Sing "Call Me Maybe" (w/ Classroom Instruments)

Jimmy Fallon, Carly Rae Jepsen & The Roots Sing "Call Me Maybe" (w/ Classroom Instruments)

"Music Room": Backstage before the show,

Jimmy Fallon, Ed Sheeran & The Roots Sing "Shape of You" (Classroom Instruments)

Jimmy Fallon, Ed Sheeran & The Roots Sing "Shape of You" (Classroom Instruments)

Ed Sheeran joins

Jimmy Fallon, Metallica & The Roots Sing "Enter Sandman" (Classroom Instruments)

Jimmy Fallon, Metallica & The Roots Sing "Enter Sandman" (Classroom Instruments)

Metallica joins

Gwen Stefani, Jimmy Fallon and The Roots Sing "Hollaback Girl" (Classroom Instruments)

Gwen Stefani, Jimmy Fallon and The Roots Sing "Hollaback Girl" (Classroom Instruments)

Gwen Stefani joins

Sheryl Crow, Jimmy Fallon & The Roots Sing "All I Wanna Do" (Classroom Instruments)

Sheryl Crow, Jimmy Fallon & The Roots Sing "All I Wanna Do" (Classroom Instruments)

Sheryl Crow joins

Jimmy Fallon, The Who & The Roots Sing "Won't Get Fooled Again" (Classroom Instruments)

Jimmy Fallon, The Who & The Roots Sing "Won't Get Fooled Again" (Classroom Instruments)

Pete Townshend and Roger Daltrey of The Who join

Jimmy Fallon, Idina Menzel & The Roots Sing "Let It Go" from "Frozen" (w/ Classroom Instruments)

Jimmy Fallon, Idina Menzel & The Roots Sing "Let It Go" from "Frozen" (w/ Classroom Instruments)

Idina Menzel stops by the Tonight Show Music Room to perform the Oscar-winning song "Let It Go" from Disney's "Frozen.