French pianist, Jean-Claude Pennetier (b. 1942) studied at the Paris Conservatoire and his since won many prizes for his performances. He also composed and published a variety of works, including his unusual yet significant Word Sounds.

Pennetier's Word Sounds is an unusual yet helpful aid to choral singing. The study book provides detailed instruction on the pronunciation of various sounds while singing. For all choirs, Pennetier's Word Sounds is a highly useful aid.