Not much is known about the British group Rockstar, who released an obscure 1976 single “Mummy”/“Over the Hill.” They did, however, include the mysterious bassist-singer Ace Kefford, who’d been in the original Move lineup before leaving in early 1968, going on to various unsuccessful post-Move recording projects over the next couple of years before drifting out of the music business. Apparently he drifted back into it for a bit in the mid-1970s, penning both sides of the single, with “Mummy” in particular bearing a strong early-‘70s David Bowie influence. The other members of Rockstar were Tony Weir, Sean Toal, and John Grimsley; both sides of the single are on the Ace the Face CD, a compilation of Kefford’s post-Move odds and ends.