With a wide ranging concert repertoire, from Bach Evangelist through to Gerontius, and the works of Janacek, Britten and beyond, Christopher has performed in many leading concert halls worldwide with many celebrated orchestras and conductors.

Several appearances at the Zaterdag Matinee at the Concertgebouw include the Hotel Porter Death in Venice alongside Anthony Rolfe Johnson, conducted by Kenneth Montgommery, Molqi in John Adam's Death of Klinghoffer under Edo de Waart and Lechmere Owen Wingrave under Lawrence Rennes.

Other notable performances include Janacek's Glagolitic Mass in the Brighton Festival under Thierry Fischer, Beethoven's 9th Symphony with the Serbian Vojvodina Symphony Orchestra, and Gerald Barry's The Triumph of Beauty and Deceit conducted by Thomas Ad├Ęs, with the Los Angeles Philharmonic at the Disney Hall, Los Angeles, and with the Birmingham Contemporary Music Group at Maison Radio France, Paris, and at the Carnegie Hall, New York.