Career
He worked with several rock and roll groups during the early 1960s, most notably Rickie Shaw and the Dolphins, where he worked with future Hollies Tony Hicks and Bobby Elliott. Originally a pianist, Calvert, on Hicks"s suggestion, switched to bass. After the break-up of the Dolphins, Calvert played in a number of semi-professional outfits.
However, unable to advance his musical career, Calvert took a factory job until he was asked to substitute for Hollies" then bassist, Eric Haydock, in a tour of Scandinavia.
After the tour, Calvert played on an Everly Brothers album, and on the Hollies" single, "Business Stop", before returning to his factory job. Shortly after that, he was invited to join the Hollies permanently in 1966.