Greg Haynes is a Connecticut-based percussion artist and composer. His current body of work features immersive soundscapes crafted with percussion instruments, found objects, video elements, and live signal processing techniques.

As a performer, Haynes has played with a diverse range of ensembles including the Hartford Symphony Orchestra, New Haven Symphony Orchestra, Longmont Symphony, Midwest Chamber Ensemble of Kansas City, Banda Sinfonica de Santa Fe in Argentina, Marimba Sol de Chiapas, Celtic Cross Pipes and Drums of Danbury, and the Redemption Sound Setters steel orchestra of Tobago. As a soloist, Haynes has performed concertos for percussion by Keiko Abe, Allan Bell, Michael Daugherty, Joseph Schwantner, and Ney Rosauro. He has premiered new percussion concertos by Craig Fitzpatrick and Kerwin Young and performed solo recitals throughout the United States and internationally.

As a composer, Haynes frequently writes commissioned work for percussion, steel band, chamber groups, electronics, and visual media. His works have been performed by university ensembles across the U.S., and his electroacoustic compositions have been featured at festivals including the New York City Electroacoustic Music Festival, the ISM Percussion Festival in Santa Fe, Argentina, and Electronic Music Midwest in Kansas City, KS. His film scores have been broadcast on PBS member stations and Amazon Prime Video. Several of his recent compositions are published through C. Alan Publications, Mau Mau Music, and the Percussive Arts Society.

Haynes serves as Associate Professor of Music at Western Connecticut State University where he directs the percussion ensembles and steel band in addition to teaching courses in percussion, music business, and audio production. Prior to his current appointment, Haynes served on the faculties of Western Colorado University, Missouri Western State University, and Missouri Southern State University. He holds degrees in cognitive science and music, including a Doctor of Musical Arts degree in percussion performance. Additional training includes a professional certificate in advanced music production from Berklee Online, supplementary coursework through the Eastman School of Music, and course audits at IRCAM, Institut de Recherche et Coordination Acoustique/Musique, in Paris, France. His research is published in journals and conference proceedings in the fields of both music and computer science.

Parallel to his work described above, Haynes has served a variety of churches as a music professional over the last 20 years, including congregations in Georgia, Kansas, Colorado, and Connecticut. He currently serves as the pianist for St. Andrew's Lutheran Church in Ridgefield, CT.