Thanks to TikTok, we've recently come to the troubling realization that you can sing pretty much any song with the music from The Killers’ “Mr. Brightside” and it somehow works.TikTok user givemetheaux made a video of just the instrumental version of the song and asked others to duet the video if they could sing.Well, several users decided to duet the video — though instead of singing the lyrics to “Mr. Brightside,” they decided to sing literally anything else.Musician josmusic decided to sing “Love Story” by Taylor Swift, joking in his caption that “Mr. Brightside” was the “best Foo Fighters song ever”.User jaggiemomo went with a different Taylor Swift song — “You Belong With Me” — though somehow it works just as well with the music.Spencelogan_, meanwhile, used the audio to sing “Mamma Mia” by Abba — and yes, it absolutely slaps.And fathudson made a pop punk version of “Replay” by Iyaz that also slaps.“You made me forget how the real song went,” one person wrote on jaggiemomo’s Taylor Swift/Killers medley