Ronan Guilfoyle is a major figure on the Irish jazz scene and has developed an international reputation as a performer, teacher and composer. He began his career with Louis Stewart's group in the early 1980's and studied at the Banff Centre for the Arts in 1986 and 1987 where his teachers included John Abercrombie, Dave Holland, and Steve Coleman.

Performing on the acoustic bass guitar since the early 1980s, Ronan is now one of the instrument's leading exponents, and is now much in demand as a bassist, both in his native Ireland and on the international jazz scene. Among the people he has performed with are Dave Liebman, Kenny Werner, Joe Lovano, Kenny Wheeler, Keith Copeland, Brad Mehldau, John Abercrombie, Larry Coryell, Benny Golson, Jim McNeely, Sonny Fortune, Andrea Keller, Andy Laster, Emily Remler, Simon Nabatov, Richie Beirach, and Tom Rainey. He has also been leading his own groups since the mid 1980s, and his groups have toured extensively in Europe, Asia, and North America. He has recorded extensively both as a sideman and as a leader and his output includes the award winning "Devsirme" in 1997.

Over the past 10 years Ronan has become very well known for the teaching of advanced rhythmic techniques for jazz improvisation and his book, "Creative Rhythmic Concepts for Jazz Improvisation" which covers such areas as metric modulation and odd metre playing, is now seen as the standard text for this area. He has been invited to teach this subject at many schools around the world including Berklee College of Music, The New School, and is an associate Artist of the Royal Academy of Music in London, and has also lectured on it for the International Music Congress (UNESCO) in Copenhagen. Ronan is the founder of and head of the jazz department at Newpark Music Centre in Dublin, the only school offering post-secondary jazz education in Ireland.