Jam might not sound like much of a national treasure, but this is Dżem (Polish for Jam) - one of the most recognised bands on the Polish rock and blues scene - and they are definitely beloved by Poland. Over the years their music has become legendary, and they have built an impressive rapport with their fans. The band is currently composed of Adam Otręba (guitar), Beno Otręba (bass guitar), Jurek Styczyński (guitar), Zbyszek Szczerbiński (percussion), Janusz Borzucki (piano) and Maciej Balcar (vocal and harmonica).