NEW YORK - Beyonce has become increasingly experimental but this sounded a bit much.

Some fans who bought a vinyl of her latest album Lemonade wound up with music from a Canadian punk band.

ZEX - an Ottawa hardcore quartet whose songs include Child Soldier and Burn The Flag - posted on Facebook a yellow record labelled as Beyonce's Lemonade playing on a turntable.

But the sound was guitar power chords and shouted vocals.

Columbia Records in a statement acknowledged a manufacturing mistake, blaming unspecified "human error" at a plant in Germany.

Rejecting any notion that it was an artistic decision, the label said: "Beyonce and ZEX were not aware of or responsible for the mispress."

The mistake was only on the A-side of Lemonade on a small number of records, said the label which promised refunds and exchanges.

ZEX - who have 8,000 likes on Facebook, compared with Beyonce's 64 million - on Monday were directing the curious to a new website to buy the music.

Lemonade, which came out last year, was considered the most musically adventurous album of the pop superstar's career. She branched into hip-hop, country - and hard rock, with Jack White and Led Zeppelin members among the credited songwriters.