“I’m So Glad” was written and originally recorded as one of 18 recordings by Skip James in 1931. These recordings would influence many early Delta blues artists – including the great Robert Johnson. However, for the next 30 years James would virtually disappear. He didn’t record and drifted in and out of music until his rediscovery in 1964. Eric Clapton and Cream recorded “I’m So Glad” for their 1966 debut album and provided James with the only windfall of his career. Deep Purple also covered the song in 1968 their first album. Skip James died of cancer in 1969 at the age of 67. [Source]
New Music United 