"I'm Not Alone" is a song by Scottish recording artist Calvin Harris, released as the lead single from his second studio album, Ready for the Weekend. The track was first played by Pete Tong on BBC Radio 1 as his "essential new tune" on 23 January 2009 and has been described as a slice of euphoric dance. On 12 April 2009, the song debuted at number one on the UK Singles Chart, earning Harris his first solo number-one single on the chart and second overall following his 2008 collaboration with Dizzee Rascal and Chrome, "Dance wiv Me".