The Foo Fighters Played "Everlong" On 'SNL' & Twitter Is In Love With The Band's Nostalgic Medley — VIDEO

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On Dec. 16, Saturday Night Live featured the Foo Fighters as the musical guest and the band played a surprise medley for their second performance of the night. The Foo Fighters played "Everlong" on SNL in a nostalgic medley that Twitter got super excited about. Band members donned Christmas sweaters as they performed the beloved '90s song "Everlong," Darlene Love's "Christmas (Baby Please Come Home)" and "Linus & Lucy" by Vince Guaraldi Trio (yep, that's Linus and Lucy of Charlie Brown fame). It was enough to give '90s kids the nostalgia feels and get them in the holiday spirit all at once.

The Foo Fighters played their new single "The Sky Is A Neighborhood" in the first performance of the night before the nostalgic surprise later in the evening. For the second performance, the opening chords of "Everlong" were instantly recognizable — and the audience was audibly excited. The beloved song was released in 1997 as a single from the band's album, The Color and the Shape. In an interview with Kerrang!, Foo Fighters frontman Dave Grohl said it didn't expect the song to become such a classic. "I knew it was a cool song, but I didn't think it would be the one song by which most people recognize the band," he said in the interview. "And I think it was the first time people had ever quoted lyrics to me, like, 'That song is beautiful! That line where you say 'Breath out so I can breath you in ...''

Grohl continued, saying that "Everlong" is a highly person song for him: "That song's about a girl that I'd fallen in love with and it was basically about being connected to someone so much, that not only do you love them physically and spiritually, but when you sing along with them you harmonize perfectly."

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"Everlong" also has a special significance as being comedian David Letterman's favorite song. Letterman signed off as host of CBS' The Late Show as the Foo Fighters played the song during his final episode in 2015.

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After "Everlong," the Foo Fighters made another possible salute to Letterman by playing Love's "Christmas (Baby Please Come Home)." Grohl turned over the singing duties to three female singers who belted the vocal parts of the tune. Love herself performed the song regularly on Letterman's The Late Show and NBC's Late Night annually since 1986 (ending when Letterman signed off as Late Show host). Love now graces The View to perform the Christmas classic tune during the holiday season.

The Foo Fighters then seamlessly transitioned into a rock version of the instrumental tune "Linus & Lucy," which is a track from the soundtrack of A Charlie Brown Christmas. No, you're not imagining things — the Foo Fighters really did salute the '90s, Letterman, and Charlie Brown all in one medley.

And Twitter was thrilled by it all. Some Twitter users could only say one word.

Many fans expressed their everlasting love for "Everlong" in lots of ways.

Other fans loved the combo of Charlie Brown and "Everlong."

The medley got many viewers into the holiday spirit after a long 2017.

Lots of Twitter users noticed the possible Letterman tribute in the band's choice of songs for the medley.

Other users were hoping that "Everlong" would go on forever. The band unfortunately did not play the full song during their SNL appearance.

Several Twitter viewers loved the choice of the band to perform in Christmas sweaters.

Watch the rocking performance in the video below and get all the nostalgic feels.

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It's clear that the love for the Foo Fighters and "Everlong" is everlasting — and it can be seamlessly combined with several classic Christmas songs for the perfect medley during the holidays.