The band went through several different line-ups and toured extensively for the next two years, to general critical acclaim. They had one commercial success: a 1970 cover version of "Woodstock" (written by Joni Mitchell) was a number one hit single in the UK Singles Chart. It experienced heavy airplay in Canada reaching No. 5, as well as peaking at No. 23 on the Billboard singles charts in the United States in 1971. Afterwards, Matthews split with Southern Comfort, who went on to release three albums of their own on Harvest Records. (Read more at Wikipedia.)