Kings of Leon guitarist Caleb Followill obliterated his 1972 Gibson ES-325 during an act of rage on-stage at the T in the Park Festival in Scotland on Friday night. Angry about the poor sound quality, Followill shattered the guitar at the end of the set and then hurled it into the crowd.

Following the show, the band reportedly got into a fight backstage, with their tour manager stepping in to intervene.

A source told The Sun, “[Caleb] was livid about the sound and took out his anger on-stage without considering the consequences. His guitar is now ruined. The crowd were oblivious to the sound difficulties but the Kings want every show to be perfect.

“When they came off stage, tempers flared and they were effing and blinding at each other. It was really nasty.”

The Sun also reported that Kings of Leon was on the brink of calling off its headlining gig at the Oxegen Festival the following night, but the band did end up performing the show.

Followill told the Oxegen crowd: “I got a bit angry after T In The Park last night and broke my guitar so I’ve had to get a new one.”

Followill has used his ES-325 steadfastly, rarely recording or performing with another guitar since the band wrote its first album in 2002.

In a 2008 interview with, longtime KOL producer Angelo Petraglia revealed the story behind the guitar.

“I found that ES-325 on eBay — the one Caleb plays — for $900,” Petraglia said. “That 325 has been on all the records.”

The Kings of Leon haven’t been shy about raking the mud lately; drummer Nathan Followill recently caused some uproar when he criticized Americans for having bad taste in music, instead lauding his U.K. fans.

“The fans are just insane in the U.K.,” Followill said. “They are music lovers. You have kids going to shows to see the bands, not going to a show to be seen there.”

The Kings of Leon will continue on to two more European gigs before hopping the pond for eight dates in the U.S. and Canada. They’ll then return to the U.K. for the Reading and Leeds Festivals in August before closing out their tour in October with dozens more dates in the U.S., Canada and Mexico.

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Watch KOL perform “Sex On Fire” at this past weekend’s T in the Park in Scotland …