Punk blues is a genre of music which mixes elements of Punk rock with Blues-rock. It is considered a type of Underground Music as it has not yet achieved mainstream popularity on radio and television and through sales of music. It is most popular in the United States. An example of a Punk blues band is the Imortal Lee County Killers and the Gun Club. One artist who may be considered to have been a big influence on this genre is Captain Beefheart.