The Iceland Airwaves music festival is staged annually in November. This festival takes place all over the city, and the concert venue Harpa is one of the main locations. Other venues that frequently organise live music events are Kex, Húrra, Gaukurinn (grunge, metal, punk), Mengi (centre for contemporary music, avant-garde music and experimental music), the Icelandic Opera and the National Theatre of Iceland for classical music.