Photo by Anthony Bertolli

Photo by Anthony Bertolli


QSF has toured Italy, China, South Korea, Japan, Turkey, and Guam, performing in Cremona, Foggia, Seoul, Tokyo, Hyogo, Sanda, Istanbul, Hagatna, and throughout central and eastern China. As winners of the Argentine Consulate’s International Tango Competition in New York, they performed tangos for an Argentine audience at the historic Café Tortoni in Buenos Aires.

U.S. appearances include New York's Le Poisson Rouge, Yoshi's Jazz Clubs in San Francisco and Oakland, the Brubeck Room in the Wilton Library (at the invitation of Dave Brubeck), the Mendocino Music Festival, in concerts with the Marin Symphony, the Peninsula Symphony, and the Tulsa Symphony, and guest appearances with numerous chamber orchestras.

Photo by Hasain Rasheed

Photo by Hasain Rasheed

Jeremy Cohen

From Oakland, California…

Jeremy Cohen is from a family of five musicians. Classically-trained and a student of Itzhak Perlman and Anne Crowden, Cohen's eclectic style reflects his respect for a wide range of violinists from Perlman and Fritz Kreisler to Joe Venuti and Eddie South. 

He has performed as soloist with numerous orchestras including the Virginia Symphony, the California Symphony and the Reno Philharmonic. His recording credits include motion picture and television soundtracks including The Dukes of Hazzard and Jane Fonda's Dollmaker, and as concertmaster on recordings with Linda Ronstadt, Ray Charles, Aaron Neville, Howard Keel and Cleo Laine.  He appeared on Carlos Santana's Grammy-winning CD Supernatural and the original Star Wars compilation CD with John Williams. 

On the stage he was the solo violinist in Forever Tango and The Best Little Whorehouse in Texas.  He has toured and recorded with the Grammy Award-winning Turtle Island Quartet. Cohen's orchestral arrangements have been featured by numerous orchestras, including the San Francisco Symphony, and the San Jose and San Francisco Chamber Orchestras.  As an educator, he has served on the faculties of the Henry Mancini Institute (Los Angeles), The Jazz School (Berkeley, CA) and the Stanford Jazz Workshop.

In 2004 Cohen released Jeremy Cohen and Friends Celebrate Joe Venuti—100 Years (VAI), a DVD tribute to Joe Venuti. Cohen and Violinjazz pay homage to violinist Eddie South in the 2010 release, The Music of Eddie South (Sono Luminous). Most of QSF’s multi-genre material has been composed or arranged by Cohen who aspires to widen the repertoire available to modern string players.

Photo by Hasain Rasheed

Photo by Hasain Rasheed

Joseph Christianson

From San Luis Obispo, California …

A graduate of San Francisco Conservatory of Music, Joseph Christianson has performed in venues throughout the United States and across the globe, including a 2012 production of La Boheme at the Muscat Royal Opera House in Muscat, Oman, under Lorin Maazel’s baton. Joseph has toured and taught chamber music workshops with Quartet San Francisco. As a member of Lazuli String Quartet, he has performed in concert series at Noe Valley Chamber Music and San Francisco Conservatory of Music, and worked with members of the Kronos Quartet, Takacs Quartet, and Danish Quartet. 

Joseph has played with conductors including Lorin Maazel, Kent Nagano, and Scott Yoo. In 2017 he performed with violinists Andrew Wan and Stefan Hersh in a video of Peter Norman’s virtuoso ensemble piece Gran Turismo, produced and published by the Colorado College Summer Music Festival. Joseph has been awarded fellowships at Colorado College Summer Music Festival, Castleton Festival, Mendocino Music Festival, and the Rubin Institute of Music Criticism.

During his studies at Peabody Institute of the Johns Hopkins University and San Francisco Conservatory of Music, his mentors have included Nina Bodnar, Herbert Greenberg, Axel Strauss, and Bettina Mussumeli.

Photo by Hasain Rasheed

Photo by Hasain Rasheed

Chad Kaltinger

From Chicago, Illinois …

Chad Kaltinger is an active freelancer in the San Francisco area and maintains a busy schedule as orchestral violist, chamber musician, soloist, and recording artist.  Principal violist for Opera San Jose and the Santa Cruz Symphony, he is a frequent guest principal at the San Jose Chamber Orchestra. Chad has performed in many festivals around the U.S. including Music in the Mountains, Arizona Musicfest, South by Southwest, the Monterey Jazz Festival, and the Mendocino Music Festival.

Chad is an active proponent of new music and performs regularly with the Cabrillo Festival of Contemporary Music, the University of California-Santa Cruz New Music Works Ensemble, and the Worn Chamber Ensemble.  He was the soloist in the  2012 U.S. premiere of Noam Sheriff’s Canarian Vespers, for solo viola and strings, with the Cadenza Chamber Orchestra in Santa Cruz, California.

Chad began his studies in Chicago at age 9.  He studied at the Music Institute of Chicago in Wilmette, Ill. with Peter Slowik, and at the University of Illinois at Urbana-Champaign with Emanuel Vardi.  As a fellowship student at the Aspen Music Festival he studied with Heidi Castleman and Victoria Chiang. Chad was the winner of the 1994 E. Nakamichi Viola Concerto Competition at the Aspen Music Festival.

Photo by Hasain Rasheed

Photo by Hasain Rasheed

Andrés Vera

From Puerto Rico …

Andrés Vera brings a rich mix of cultural influences to his playing. Surrounded by the sounds of salsa, reggae, Latin jazz, Mozart, Beethoven and Brahms, Andrés grew up with an affinity for music and its variety, color, and ethnic diversity. He was invited to join the cello section of the Miami Symphony Orchestra at the age of 17.

Andrés holds a B.A. degree from the University of Miami and an M.M. degree and post-graduate Professional Studies Diploma from the San Francisco Conservatory of Music. He studied with Ross Harbaugh, Jean-Michel Fonteneau and Jennifer Culp. Andrés is a founding member of the Cello Street Quartet, with whom he traveled in 2014 to Russia, Kosovo and Hungary for the U.S. State Department. 

Andrés Vera is a skilled collaborator and performer of Classical and Baroque cello repertoire. He currently performs as a soloist, orchestra member, and chamber musician, and has been seen in countless cabaret venues throughout the Bay Area. Andrés teaches at Sacred Heart Preparatory High School in San Francisco. He is also an instructor for the YMCA of San Francisco’s After School Program, fostering the next generation of young cellists.