Dżem – Polishblues-rock band. The name is play on words: dżem - in English fruit preserve, but phonetically, (IPA: ['Dʐɛm]) identical to Jam. Their most recognized songs are "Czerwony jak cegła" ("Red like a brick"), "Whisky", "Wehikuł Czasu" ("The Time Machine"), "Sen o Victorii" ("Dream of Victoria") and many more. They were the back-up band for Eric Clapton concert in Gdynia Poland on 14th August 2008.