Crispin works principally as a conductor. He has also performed professionally as a violinist, baroque violinist, solo singer, choral singer, and keyboard continuo player, and has edited many works for publication. He is the conductor of specialist baroque ensemble The Musicall Compass, which he founded while a post-graduate student at the Royal College of Music, and of three choral societies.
He is also regularly engaged as a guest conductor by symphony orchestras and choirs: he has conducted numerous symphonic, operatic and choral works at London's most prestigious venues, as well as on BBC Radio 3.
Crispin regularly gives singing recitals, and is a frequent soloist for various societies, most recently singing Mahler's 'Kindertotenlieder' with symphony orchestra. He studies singing with Christopher Field.
In addition to his work with TCS, Crispin is Chorus Master of Welwyn Garden City Chorus. He is also the conductor of Luton Choral Society (60-70 voices), Chiltern Sinfonia, and Noah's Company - an opera company devoted to involving children in music. With them, he conducted the much publicised London production of Britten's Noyes Fludde, which involved over 1000 children and a cast including Catherine Wynn Rogers and Tim Piggott-Smith.