Two Bands 1 Clay Allison 1984 David Roback And Kendra Smith Who Later Became Opal Who Became Mazzy Star 2 Clay Allison Is An Indiepop-Band From Linköpping Sweden. Formed In 1999 They Consist Of Jörgen Wärnström - Bass Backing Vocals Eric Krona - Drums Kim Bergdahl - Rhodes Keyboards Niklas Larsson - Trombone Backing Vocals Viktor Sandberg - Vocals Guitars