Inez and Charlie Foxx name Inez Johnston, but with little success. In early 1963, the pair introduced themselves to Henry 'Juggy' Murray, the owner of Sue Records, and sang him their arrangement of the traditional lullaby "Hush, Little Baby". The song, re-titled "Mockingbird", was released in 1963 and made the Top 10 on both the US rhythm and blues and pop charts. It was their most successful record, sold over one million copies, and was awarded a gold disc by the RIAA. It was later covered by artists including Aretha Franklin, James Taylor and Carly Simon, Dusty Springfield, Etta James with Taj Mahal and
Who Is It (Björk song) in the choruses with synthesizers that she later imitated with her voice. It was also the first song that Rahzel sang, doing the beat in one take. Björk said that after he recorded, "we just all fell on the floor, we couldn't believe it. There's no overdubs, no treatment – this is it. I felt quite proud – if you're gonna have a human beatboxer, at least get the real thing". "Who Is It" features contributions by throat-singer Tanya Tagaq and beatboxer Rahzel. Some lyrics of "Who Is It" — "Who is it that never lets you down?" — may