Clem was born in Salisbury, Southern Rhodesia in 1948 and began writing songs while he was an art student in Durban, South Africa. One of his first songs, Vagabond Gun was a category winner at the South Africa Music Festival in 1966. Clem later moved back to Rhodesia to work in advertising. He started singing at Rhodesia's first folk venue, The Troubadour in Salisbury's Angwa Street. Whilst performing there, he met Sue Eccles and Andy Dillon. The trio formed a group called The Kinfolk, then moved to South Africa, and shortly after moving to Johannesburg, Eccles left the group. Clem and Andy formed a new group with Yvonne Raff, which they called The Legend Trio. This new trio began singing at the original Southern African "Troubadour", and were also involved in a number of SAFMA's National Folk Fests. Clem married Jean Smith in 1967. Clem embarked on a solo career, recording some singles with Art Heatlie at Trutone. Mel Miller, Peter Leroy and Sylvia Stott briefly joined Clem to form a group in 1970, before Clem moved back to Rhodesia in 1971. Clem returned and soon built up a strong following. He did a series of Rhodesian Television shows, and presented a radio programme called Folk on the Rocks, aired for two series. The name came from the folk club Clem ran at The Beverley Rocks, where it played to regular packed houses. A popular star of the annual Bless 'Em All Troop Shows, and in great demand in the Rhodesian entertainment scene, Clem recorded his first album Songs of Love & War at Shed Studios. Clem wrote and produced the album himself. The album was awarded a Gold Disc. He wrote the soundtrack and songs for the C.I.S. film What A Time it Was and the theme song for a film honouring the wounded troopies of Rhodesia, Tsanga, Tsanga. He appeared at the 7 Arts Theatre, Harare in the first half, supporting the American comedian Shelley Berman with members of the Shed Studios band – Comprising Martin Norris, Steve Roskilly, Bothwell Nyamhondera, Tony Logan and Steve Hughes. As artistic director of the advertising agency Matthewman Banks and Tholet, he was instrumental in writing a great many and memorable music jingles for his clients. He produced a second album at Shed Studios, called Two Sides to Every Story, before moving back to South Africa. After living and working in the advertising industry for many years in Cape Town, Clem died on 6 October 2004 after having suffered from the effects of a debilitating illness for a number of years. Clem's last album, Archives was sold as a fundraiser to benefit the Flame Lily Foundation. This fundraising project seeks to provide funds for the living expenses of elderly former residents of Zimbabwe and Rhodesia living in South Africa, who have been denied their pensions by the Zimbabwean government.