As the name suggests, the Missa Popularis has its musical roots in folk music.This becomes clear in the very first bars of the Kyrie, where the violin plays a melody in the style of a Swedish folk tune above a bass ostinato. The musical charm of the Mass derives from the combination of choir [ SSA(TB)] and string quartet.The choral parts enable performances by female choir or mixed choir. In the latter case the string quartet is reinforced by a double bass.The version for female choir was premičred in Poznan on 25 April 2015, with Alicja Szeluga conducting the Skowroniki Girls Choir.(Level of difficulty: moderate)