What makes Mountains by Biffy Clyro notable?

'Mountains' became one of Biffy Clyro's most commercially successful tracks, reaching number five on the UK Singles Chart and receiving critical acclaim for its expansive sound. The song's popularity helped solidify their status in the indie rock genre, influencing a wave of bands seeking similarly grand soundscapes during that period. In 2008, Biffy Clyro was transitioning from cult favorites to mainstream success with 'Mountains,' their first single from the album 'Only Revolutions.' This release followed their breakthrough album 'Puzzle' (2007), which had established them as a significant force in the UK rock scene. The song marked a pivotal moment as they began to gain traction in international markets.