Ras Michael and his band, the Sons of Negus, have been important purveyors of Rastafarian ideals and cultural issues since the early 1970s. Their music is propelled by traditional Nyahbingi drumming, which utilizes a bass, funde and repeater drum to generate a deeply percussive drive. Through the years, they've used spiritual drumming and chanting in a variety of settings, from extremely solemn Roots Reggae to some of Jamaica's most ethereal Dub grooves, especially on the album Rastafari Dub. The drum forms the basis for all of Ras Michael's songs and helps carry his strong, enlightened messages. He has expanded his boundaries in the past few years, adding his playing to a Jerry Garcia tribute while collaborating with artists such as H.R. from Bad Brains.