The Rolling Stones Mobile Studio (also known as the RSM) is a mobile recording studio inside a DAF F1600 Turbo truck, once owned by the English rock band the Rolling Stones. Numerous bands and artists have recorded music using the RSM, including the Who, Dire Straits, Deep Purple, Lou Reed, Bob Marley, Horslips, Nazareth, Fleetwood Mac, Bad Company, Status Quo, Led Zeppelin, Iron Maiden, Wishbone Ash, Motorhead and the Rolling Stones themselves. Today, the RSM resides at the National Music Centre in Calgary. History The concept for the Rolling Stones Mobile Studio came about in 1968 when the Rolling Stones, tired of the 9-to-5 limitations of commercial recording studios and being billed for studio time sometimes spent rehearsing or composing, decided to find a way to record at Mick Jagger's new Stargroves country estate. Since recording at this residential location would require all of the necessary recording equipment to be transported to Jagger's house, the band's road manager and pianist Ian Stewart introduced the idea of building a recording studio control room within a truck. Under Stewart's guidance, a number of top engineers and producers, including Glyn Johns, were consulted in the project's creation, which was then taken to Dick Swettenham's company Helios Electronics. Known for making mixing consoles for some of the most exclusive studios of the time, the company then produced the first working version of the Rolling Stones Mobile Studio. Originally only intended for use by the Rolling Stones, the RSM soon gained popularity with other rock bands, such as the Who, the Faces, and Led Zeppelin. Several classic albums were recorded with the Mobile Studio, including most of Led Zeppelin's Led Zeppelin III (1970) and Led Zeppelin IV (1971), much of the Rolling Stones' Sticky Fingers (1971) and Exile on Main St. (1972), as well as the Stones' 1969 Hyde Park concert. The unit was used in a large variety of locations, everywhere from halls to barns to castles and the casino at Montreux, Switzerland. During the making of the sixth Deep Purple album, Machine Head, the Mobile nearly caught fire as it stood next to the casino, which was set ablaze during a Frank Zappa concert. This incident became the inspiration behind Deep Purple's most famous song, "Smoke on the Water", which mentioned the Mobile in the lyrics ("We all came out to Montreux ... to make records with a mobile") and later referred to