Kanye West Decrees Himself the 'Greatest Living Rockstar,' Performs 'Bohemian Rhapsody' at Glastonbury (VIDEO)

Despite dubbing himself the “greatest living rockstar on the planet,” Kanye West took a break from his own discography to perform a popular tune by some other rock stars during his set at Glastonbury on Saturday.

West, 38, who was one of the headliners at the British music festival, led a audience sing-a-long of Queen’s iconic 1975 hit “Bohemian Rhapsody.”

The “All Day” rapper, who played a 30-track set for the packed crowd, appeared to briefly forget the lyrics as he mouthed the intro of the Freddie Mercury-led song, before confidently crooned the first verse with fan-backing.

Many fans expressed their disappointment in the star’s short rendition, taking to Twitter to critique the “Only One” singer.

“I have seriously honestly genuinely just farted a better cover of Bohemian Rhapsody than Kanye West did at Glastonbury,” one user wrote.

Other’s expressed distaste at the famously self-confident artist’s decision to cover a beloved track.

West was also bum-rushed onstage during the set by Lee Neeson, a British comedian. Neeson, who was quickly taken out by security, donned a “Lee-Zus” t-shirt for the daring move.

Earlier in the year, thousands of people signed a petition attempting to block West’s performance at the Somerset festival. The petition, which failed, called West an “insult to music fans all over the world.”

The Grammy-winner’s Saturday show was his first time performing at the annual festival.