Both veterans of Birmingham England's early-'60s "Brumbeat" scene, Mike Sheridan and Rick Price began writing songs together in 1968, just a little bit before Price received an offer from Roy Wood of the Move to join that group. He filled the spot left by guitarist/singer Trevor Burton when the latter quit the group soon after the release of "Blackberry Way." They continued to write together during Price's tenure with the band, which lasted until 1969, at approximately the same time that Jeff Lynne joined the band and Wood conceived the notion of the Electric Light Orchestra -- during that period, the Move recorded one Sheridan/Price copyright, "Lightning Never Strikes", as the B-side of "Brontosaurus." In the wake of his exiting the Move, Price and Sheridan ended up being signed together as recording artists to President Records.
They lasted with the label for a year, releasing singles variously as Rick Price & Sheridan, Sheridan/Price, and several other permutations, although Sheridan/Price was the name ultimately used for their one official album, This Is to Certify: Gemini Anthology. The tracks were actually credited separately to them within the album, and the exact work of the duo was always a bit confusing, apparently even to the label, which regarded Price as the principal artist. They lasted together officially through 1970, and their output consisted of beautifully melodic pop/rock, reminiscent of the most pop-oriented output of the Move. In 2004, President Records released a double-CD set entitled This Is to Certify, containing the complete recordings of the duo augmented with Price's solo output for the label.