Sue Burkhart performs on classical and electric guitars as well as other stringed instruments. She has a Master’s degree in classical guitar performance from the Hartt School of Music in Hartford, CT, and was one of the original founders of the Connecticut Classical Guitar Society.  Since 1988, Sue has been on the music faculty at Wesleyan University in Middletown, CT, and has taught at the Community Music School of  Springfield since 1987. Sue was a featured instructor and performer at the 1998 National Guitar  Summer Workshop in New Milford, CT. 
    Sue has opened for and appeared with artists ranging from Adrian Legg, Preston Reed, and  Ani DiFranco to Howard Levy and Trio Globo, and has been a guest artist with the Hartford  Symphony Orchestra, the Bridgeport Symphony Orchestra, and the New World Consort. Sue’s  radio appearances have included “Open Air New England” with Faith Middleton on National  Public Radio and “Up the Creek” with Johnny Memphis on WRSI, Greenfield, MA.  Currently Sue can be heard performing with Viva Quetzal or her own rock group, SuperKart.

Roberto Clavijo was born in Chile where he's been a professional musician since the age of 18.  He was the director of a folkloric song and dance group in Chile.  He later toured much of South and Central America with the renown folkloric group Guamary, playing in folk clubs, on television and university concerts in Panama, Ecuador, Peru, Chile, and Curacao.  Roberto came to the United States in 1981.  He has toured Great Britain in 1992-1993, with the group Gypsy Real, playing on BBC radio in England and Wales.  As a member of Viva Quetzal since 1993 he can be heard performing on quenas, zampoñas, charango, Venezuelan cuatro, and vocals.  Roberto is also a skilled folkloric wind and stringed instrument maker.

Juan Carlos Carpio grew up playing music in his home country of Ecuador.  He then moved to Europe to perform with various groups throughout Belgium, Holland and France.  He studied music at the Jazz Studio in Antwerp, Belgium.While living in New York city he was a musician-in-residence for The Pregones Theater Company and The Puerto Rican Travelling Theater.  At this time he also worked as an educator for the Latino Society of the Educational Arts.  In recent years he's toured Latin America and the United States with the Chilean based group Altiplano, one of the worlds most outstanding contemporary Andean ensembles.  Juan Carlos is currently performing with Viva Quetzal and working as a Spanish teacher at Hampshire College and Hartsbrook School in Amherst, Ma.

Jon Weeks performs on flute, saxophones, wind synth, quena, congas, and small percussion.  He has studied music at Berklee College of Music, Westfield State College and Holyoke Community College.  Jon has performed with many latin, jazz, and rock bands up and down the East Coast such as Sol Y Canto, Orquesta Unidad, Ray Gonzalez, Jose Gonzalez, The Temptations and many others.  Jon is currently teaching private lessons at Downtown Sounds (Northampton, MA) and The Family Music Center  (Greenfield, MA). He is also director of instrumental ensembles at The Charlemont Academy (Charlemont, MA).   Currently he can be heard performing with Viva Quetzal, Joe Velez & Creación, Satinwood, Northside Saxophone Quartet, and the 50’s rock group Shakin’ All Over.

Jeff Nissenbaum has been a professional drummer for over 15 years.  After studying classical violin for ten years, he began his drum studies with David Barrett.  Jeff studied with Keith Copeland and Max Roach at the UMass Jazz in July workshop.  He performed for the Lee Strasberg Creative Center in Los Angeles in 1989 and the Bright Moments Festival with the Afro-Andean band Quetzal in 1994.  In addition, he has performed for and recorded with numerous contemporary groups of varying styles, including Ben Demerath, Steel Wave, and the Muze Jazz Ensemble.