Michael Berkeley's guest is consultant rheumatologist Dr Christopher Wynn Parry, who specialises in upper limb problems developed by performing musicians. A great music lover, his choices range from the music he first encountered and performed himself as a student at Oxford, especially vocal music by Monteverdi, Machaut and Byrd, to a keyboard Partita by Bach, a Mozart wind serenade, Handel's Music for the Royal Fireworks and Stravinsky's ballet Apollon musagete.