"The Marbles" were an English rock duo, consisted of Graham Bonnet and Trevor Gordon, operating between 1968 and 1969. The only well-known singles were "Only One Woman" and "The Walls Fell Down". The Marbles were typical one-hit wonders because "Only One Woman" became their one and only major hit. It reached Number 5 in the UK Singles Chart in November 1968. The duo disbanded in 1969, shortly after their split, they released their only self-titled album in 1970.