Rita Coolidge
With Leon Russell, Delaney and Bonnie co-wrote "Superstar", popularized by the Carpenters, and the classic "Let It Rain", which is included on Clapton's eponymous first album. The song '"Superstar'" was originally written by Bonnie Bramlett and Rita Coolidge as detailed in the autobiography 'Delta Lady' by Rita Coolidge and Michael Walker. Eric Clapton added some embellishments to the music.