Heavy Psych Sounds festival takes place in Athens, Greece on April 3-4, 2026, featuring a powerful lineup of rock, heavy rock, and metal acts. The festival showcases headliners Planet of Zeus, Greenleaf, and Colour Haze alongside notable performers including Godsleep, Weedpecker, Töns, and Witchthroat Serpent. Additional artists on the bill include 1782, Oreyeon, Kidney Black, Dismiss, and Fuzzrider, creating a diverse heavy music experience across two days. With 12 artists total, this Greek metal festival offers an extensive celebration of heavy psych and rock music for fans of the genre.