Katy Perry's Rendition of 'Yesterday' Leaves Beatles Fans Enraged at 'The Beatles: The Night That Changed America - A Grammy Salute' (VIDEO)

During the Grammy's tribute to The Beatles this weekend, the hashtag Beatles was trending around the world and people filled their Twitter feeds with all sorts of thoughts on the event. One particular performance gained heavy criticism on social media and that was pop star Katy Perry's version of the popular song, "Yesterday."

CBS hosted the special live event and numerous celebs and musicians turned up to pay tribute to the 50th anniversary of The Beatles's first appearance on American television. Returning to the Ed Sullivan Theater, Paul McCartney and Ringo Starr were on hand to witness performances of some of their classic hits.

Beatle fans were ranting and raving over the energy packed performances by the likes of celebs like Dave Grohl, Annie Lennox, Alicia Keys, John Mayer, and others; but fans said Perry should have been left out of the line up.

As Perry took on the classic "Yesterday," people's disapproval began to surface on Twitter.

"Katy Perry sang 'Yesterday' and changed the word 'man' to 'girl.' It seems like a simple switch, but Beatles fans were not amused," said one post.

Another added, "Seriously ... NOT Yesterday, Today, Tomorrow, OR Ever, should Katy Perry appear on a tribute to The Beatles! ?#fail ?#Beatles50." Someone else said, "This ?#Beatles show is good...but I could do without Katy Perry ruining Yesterday."

Beatles fan appeared embarrassed by Perry's approach to the classic, "On behalf of Beatles fans everywhere, I apologize for Katy Perry" another said.

"'Yesterday' is without question my favorite ?#Beatles song. Katy Perry is butchering this. Who agreed to let this happen?" said another and the list of backlash went on and on.

"Yesterday" remains popular today with more than 2,200 cover versions, and is reportedly one of the most covered songs in the history of recorded music. It was song originally recorded by the Beatles for their 1965 album Help!.