A famous duet with Bowie, "Under Pressure" was the result of an impromptu jam session in the band's studio in Montreux. When it was released in 1981, "Under Pressure" reached number one in the UK singles chart. Although it was credited to the entire band and Bowie, Mercury was the primary director of this track, with him and Bowie being the main lyricists (each writing the lines they sang). John Deacon came up with the bass riff. Part of the chord progression is based on a rough demo of an unreleased song, "Feel Like". The songwriting is credited to all five participants.