String Project Faculty

The University of Arizona String Project is directed by Dr. Theodore Buchholz.
The String Project Master Teacher is Dr. Kesley Nussbaum.


Isabel Burgos-DeStephanis is currently in her third year at the university of Arizona pursuing a double degree of cello performance and music education. Isabel studies at the university under the guidance of Dr. Theodore Buchholz at the Fred Fox School of Music. Isabel has performed solo repertoire in a master class with Brooklyn Rider. In high school she has performed in the Civic orchestra youth competition, in the Southern Arizona Symphony Orchestra youth concerto competition, in AMEA solo and ensemble festival, and in the Tucson Cello Congress Young Artist competition. In college Isabel has performed in the University of Arizona concerto competition, the Tucson Cello Congress Young Artist competition, the 2023 Bach competition and the 2023 contemporary string solo competition which she won. Isabel currently participates in the Arizona Symphony orchestra and the chamber music program at the University of Arizona. Outside the University of Arizona Isabel participated in the 2023 Arianna chamber music festival where she studied with Kurt Baldwin, John McGrosso, Joanna Mendoza, and Julia Sakharova.  In her free time Isabel enjoys baking, riding horses, and line dancing.

Claire Davis is a performer and an educator. As a violist and a chamber musician, she has performed in ensembles, concerts, and festivals virtually, in Italy, and across the United States. Recent highlights include the Wild Plums Recording Retreat, International Music Festival of the Adriatic, and the Arizona Symphony Orchestra. As an advocate for equity in music, Claire aims to support diverse voices through representative programming, pushing for inclusion at all levels of decision-making, and music history research. In 2022, her quartet premiered her performing edition of Isabella Beaton’s Quartet for Stringed Instruments (1898-1899).

Currently based in Tucson, AZ, Claire teaches private lessons and group classes at the University of Arizona’s String Project. Previously, she was the Associate Teacher of Viola and Violin at Studio E Grinnell and co-taught KidsMusic, an after-school elementary program, in Grinnell, IA. Beyond forming excellent technical proficiency, Claire aims to support her students’ self-confidence, sense of belonging, and well-being through her teaching.

Claire is pursuing her Master of Music in Viola Performance with Dr. Molly Gebrian at the University of Arizona. She attained her Bachelor of Arts in Music and History from Grinnell College. Read more about Claire on her website: 

Brynne Gallup, a Utah native, is currently pursuing a Bachelor of Music in Violin Performance at the University of Arizona under the direction of Timothy Kantor. An active orchestral and chamber musician, Brynne is a member of the Arizona Symphony Orchestra along with utilizing the University of Arizona chamber music program to work with a diverse group of ensembles. A strong advocate for the performance of works composed by women, Brynne endeavors to bring more compositions by women into the spotlight through her own performances; she has recently showcased works by Emilie Mayer, Florence Price, and Amanda Maier. 

Brynne has spent her last four summers at Kinhaven Music School in the hills of Vermont studying a diverse array of chamber and orchestral music, most recently working with Tomoko Fujita and Adrienne Kim. Brynne formerly studied with David Price and Kathryn Eberle and frequently collaborates with Jared Oaks. 

Outside of music, Brynne spends her summers waterskiing and travelling as much as possible, most recently making her first visit to Germany, France, Switzerland, Belgium, and The Netherlands.

Madeleine Guillaumot
is a senior at the University of Arizona pursuing a BS in Neuroscience and Cognitive Science as well as a BA in Music, focusing on cello performance under the tutelage of Dr. Buchholz. At the University she has enjoyed participating in chamber music, playing with the Arizona Symphony Orchestra, and performing solo. Madeleine placed first in the 2023 Solo Bach Competition and was a finalist in the 2023 Cello Congress Solo Competition. Madeleine has played in masterclasses for renown pedagogues such as Hans Jensen, Anthony Elliot, Lawrence Stromberg, and the Brooklyn Rider Quartet. Madeleine teaches privately as well as with Tucson Youth Music Center and String Project. She loves to inspire students to believe in their abilities through understanding how the brain learns and how to practice effectively. In her free time Madeleine loves to connect with her Oregon roots through hiking, rock climbing, and spending time outdoors.

Julian Hodge is currently in his second year of a Bachelors of Music Education and Cello Performance Degree studying under Theodore Buchholz at the University of Arizona. Julian is a Tucson native and started playing cello at the age of ten. He has always enjoyed spreading joy through music leading him to collaborate with other musicians across the country. This has brought him to programs like Fulton Music Academy, Rockyridge, Southwest Strings Quartet, and Cello Congress. Julian is excited to start his teaching career and hopes to inspire his students to express themselves through their instruments.

Delia Robbennolt is currently in her senior year of a Bachelors of Music Degree in Violin Performance studying under Tim Kantor at the University of Arizona. Delia is originally from Brooklyn, NY where she started playing violin at the age of four. She has always had a passion for playing with others, which has brought her to programs like Meadowmount, Kinhaven Music School, Chamber Music Center of New York, Interlochen Violin Intensive, and Prague Summer Nights. Delia has started focusing on how to be an advocate within the music world, taking on positions with the National String Project Board, as well as presenting and volunteering at the 2023 ASTA National Conference. Delia hopes to inspire students on the instrument, and emphasize the excitement music can bring to this world!

Sarah Rosales is a senior undergraduate student at the University of Arizona pursuing a double degree in Cello Performance and Illustration/Design/Animation. Sarah studies at the university under the guidance of Dr. Theodore Buchholz at the Fred Fox School of Music. Over the years, Sarah has acquired a number of performance opportunities, including at the International Summer Music Institute at the University of North Texas, the Killington Music Festival in Killington, Vermont, and the El Paso Youth Symphony Orchestras, where they have performed as both a soloist and an ensemble member. Currently, Sarah performs in the Arizona Symphony Orchestra and the chamber music programs at the University of Arizona.
Sarah is passionate about the exposure of marginalized and underrepresented groups in the arts, especially the LGBT+ community. On their free time, Sarah enjoys other creative activities such as drawing and playing Dungeons and Dragons.

Dorthea Stephenson is currently in her fourth year of a Bachelor’s of Music Degree in Viola Performance at the University of Arizona Fred Fox School of Music, where she studies with Dr. Molly Gebrian. An avid advocate for underrepresented voices in classical music, Dorthea was part of a team of musicians from across the country to develop a database for underrepresented composers who have written viola repertoire. The database is currently on the American Viola Society website, and has over 500 composers and nearly 1600 pieces. While at the University of Arizona, she has performed with several ensembles, including University of Arizona Philharmonic, Arizona Symphony Orchestra, Desert Vio- las (a viola ensemble), and various chamber ensembles. She loves classical music, and would like to have a studio someday where she can share her love of viola and music with other underprivileged students free of charge. Dorthea is passionate about sharing the gift of music with underprivileged students in hope that music provides as much peace and solace as It does for herself. Dorthea also hopes to continue to pursue a graduate degree in viola performance once she graduates, and hopes to have a career as an orchestral musician.

Clare Truss is an undergraduate studying music education at The University of Arizona Fred Fox School of Music. Clare’s primary instrument is the violin which she studies under professor Timothy Kantor. She has experience as both performer and teacher, having played with the UA Philharmonic Orchestra, Southern Arizona Symphony, Tucson Repertory Orchestra, as well as several small chamber ensembles. Clare has several years of teaching experience as a former coach for Tucson Junior Strings, a returning clinician for Sahuarita Unified School District Orchestra Day, and through shadowing many fantastic K-12 teachers as part of her music education curriculum.



Faculty members Mr. El, Mr. Jayden, and Ms. Maria perform Auld Lang Syne for three cellos.