Group Reliéf is one of Europe’s top bluegrass. There is at most festivals with a focus on bluegrass, country and folk in this country and Europe. The repertoire consists of songs sung by the group in English with an emphasis on polyphonic vocals. Relief has significant potential copyright Zbynek Bures, some original songs have appeared on albums by the American and Czech groups of this genre. An integral part of the Gospel are sung a capella.