NEW YORK - Beyonce has become increasingly experimental, but this sounded a bit much: some fans who bought 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 labeled 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 Tuesday were directing the curious to a new website to buy the music. - AFP