They have authored a series of recordings and concerts featuring music by Johannes Ockeghem, Josquin des Prez, Jacob Obrecht and other composers of the Franco-Flemish Renaissance.
The ensemble, whose name is pronounced like American 'Clarks', was soon signed by the record label ASV (later Sanctuary Classics).
In the late 2000s, The Clerks have moved into contemporary music and have given premieres of work by several British composers, including Robert Saxton, Gabriel Jackson and Christopher Fox.
They commissioned Ian Duhig to write new poems for 'Le Roman de Fauvel', which was first performed at the Queen Elizabeth Hall on the South Bank in 2007, and enthusiastically reviewed in The New York Times when performed in that city in 2009.
[citation needed] The Clerks have been associated with pioneering work in the field of performance practice, in particular singing from facsimiles of Renaissance manuscript sources, a process heavily influenced by the work of Margaret Bent and John Milsom.