Riverside are a progressive rock band from Warsaw, Poland. They were founded in 2001 by friends Mariusz Duda, Piotr Grudziński, Piotr Kozieradzki and Jacek Melnicki, who shared a love for progressive rock and heavy metal, although Duda, the main lyricist and composer of the band, was originally a fan of electronic, ambient, experimental music, like Radiohead, Massive Attack, Dead Can Dance, Tangerine Dream, Peter Gabriel, and later on, prog rock like Pink Floyd, Rush, Marillion; and Thrash Metal. Riverside can be described as a blend of atmospheric rock and metal elements, resulting in a sound similar to that of Porcupine Tree, Pain of Salvation, and Dream Theater.