Nicholas Berkeley "Nick" Mason is an English musician and composer, best known as the drummer of Pink Floyd. He is the only constant member of the band since its formation in 1965. Despite solely writing only a few Pink Floyd songs, Mason has co-written some of Pink Floyd's most popular compositions such as "Echoes" and "Time". Mason is the only Pink Floyd member to be featured on every one of their albums. It is estimated that as of 2010, the group have sold over 250 million records worldwide, including 74.5 million units sold in the United States. He competes in auto racing events, such as the 24 Hours of Le Mans. On 26 November 2012, Mason received an Honorary Doctor of Letters from the University of Westminster at the presentation ceremony of the School of Architecture and Built Environment.