Attention, the time machine takes you back to 2001, landing you at the Alien Ant Farm and CKY concert. It's all happening at Krakow's Kwadrat on October 28.

Yes, we know, you can't wait for them to go wild with their version of Michael Jackson's “Smooth Criminal,” but that's not their only asset. Alien Ant Farm operate at the intersection of alt-rock and alt-metal, while diversifying both streams in their own way. They don't lack - as indicated by the era in which they created their monumental numbers - nu-metal rocking rhythms, and they also possess a funky looseness and convincing performance swagger.

CKY are also a memorable crew in the context of the rock-metal forefront from the US in the early 21st century. Those who are familiar with “Jackass” are surely familiar with them as well. They have an unabashedly ridiculous gene, alt-metal earworminess and a bit of a stoner feel. Loose convention all the way.