Cream were a 1960s British rock supergroup power trio consisting of bassist/singer Jack Bruce, drummer Ginger Baker, and guitarist/singer Eric Clapton. Their sound was characterised by a hybrid of blues rock, hard rock and psychedelic rock, combining psychedelia-themed lyrics, Eric Clapton's blues guitar playing, Jack Bruce's operatic voice and prominent bass playing and Ginger Baker's jazz-influenced drumming. The group's third album, Wheels of Fire, was the world's first platinum-selling double album. Cream was widely regarded as being the world's first successful supergroup. In their career, they sold over 15 million albums worldwide. Cream's music included songs based on traditional blues such as "Crossroads" and "Spoonful", and modern blues such as "Born Under a Bad Sign", as well as more eccentric songs such as "Strange Brew", "Tales of Brave Ulysses" and "Toad".