Josh Quinlan, Anna Marie Wytko, Preston Duncan and Greg Osby are U.S. saxophonists and special guests at SaxFest Costa Rica.

Josh Quinlan is a U.S.-born saxophonist, composer and educator who lives in Heredia Province. He is a professor of saxophone at the National University of Costa Rica. He holds a Doctor of Musical Arts degree in Jazz Studies from the University of Colorado. As well, he is a graduate of the Cincinnati Conservatory of Music (BM) and DePaul University (MMA).

Preston Duncan has appeared as a soloist throughout the United States, Latin America and Europe. He has performed internationally in such prestigious venues as the Salle Verdi in Milan, the American Embassy in Paris, The Royal Conservatory in Brussels, the National Conservatory in San José and Disneyland in Los Angeles among many other places. 

Saxophonist, composer, producer, educator and curator Greg Osby has earned numerous awards and critical acclaim for his recorded works by The New York Times as one of the "most provocative musical thinkers of his generation". After recording 4 projects for JMT/Polygram, Osby signed with Blue Note Records in 1990 and recorded fifteen albums for that label as a leader.

Anna Marie Wytko is a professor of saxophone at the Kansas State University School of Music, Theater, and Dance. A Yamaha Performing Artist-Clinician, she has performed and taught extensively on an international level including the Montevideo Symphonic Orchestra in Uruguay, the Latin American Saxophone Alliance World Congress, with the San José Symphonic Orchestra, at Carnegie Hall for the New York International Music Festival and throughout England and Scotland, among other countries.