Runrig were a Scottish Celtic rock band formed on the Isle of Skye in 1973. From its inception, the band's line-up included brothers and songwriters Rory MacDonald and Calum MacDonald. The line-up during most of the 1980s and 1990s, which was the band's most successful period commercially, also included Donnie Munro, Malcolm Jones, Iain Bayne, and Pete Wishart. Munro left the band in 1997 to pursue a career in politics and was replaced by Bruce Guthro. Wishart left in 2001, also to pursue a career in politics, and was replaced by Brian Hurren. The band released fourteen studio albums, with a number of their songs sung in Scottish Gaelic. At the height of their success during the 1980s and 1990s, Runrig were described by Billboard as one of the "most celebrated" Gaelic language bands in Scotland. Initially formed as a three-piece dance band known as 'The Run Rig Dance Band', the band played several low key events, and has previously cited a ceilidh at Kelvin Hall, Glasgow as their first concert. Runrig's music is often described as a blend of folk and rock music, with the band's lyrics often focusing upon locations, history, politics, and people that are unique to Scotland.