Sasha Callahan – violin:


Violinist Sasha Callahan has established a vibrant and diverse career as recitalist, chamber and orchestral musician. She has performed extensively throughout North America, Europe, Australia and Japan and is a founding member of Sheffield Chamber Players and the Willamette Valley Chamber Music Festival. Recent highlights include a sold out run as the violinist for the American Repertory Theater’s revival of Porgy and Bess, a performance as soloist on Brahms Double Concerto, and a solo Bach performance at the National Cathedral (D.C.). As an active chamber musician, Sasha can often be heard playing duos with her husband, cellist Leo Eguchi, as well as performances with groups such as the Aurea Ensemble, Walden Chamber Players, the Corigliano Quartet, the Lunaire Quartet, Trio Veritas, and ALEA III, and frequent chamber performances at the New Hampshire Music Festival (even on the occasional mountain top).  Sasha is committed to sharing new music with audiences, and has worked closely with many composers such as Joan Tower, Nathaniel Stookey, Gabriela Lena Frank, Andrew Waggoner, Andrew List, Lukas Foss, and Gunther Schuller. 


Sasha can be heard as a member of the Portland (Maine) Symphony, Rhode Island Philharmonic, and New Hampshire Music Festival, as well as with the Boston Pops, Boston Modern Orchestra Project, Boston Landmarks Orchestra, Boston Lyric Opera, Odyssey Opera, Emmanuel Music and the Boston Ballet Orchestra.  Upcoming concerts include several exciting solo appearances, including a concerto performance with the Portland (Maine) Symphony. 


A native of Portland, Oregon, Sasha attended Wilson High School and went on to receive her Bachelor of Music degree in violin performance from Rice University and Master of Music from Boston University. Principal teachers include Lucia Lin, Sergiu Luca, Denes Zsigmondy, and Carol Sindell.  She currently resides in Boston with her husband Leo Eguchi, daughter Freya and two rather sedentary cats named Max and Katya.

Sasha Callahan
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Greg Ewer - violin:


Greg Ewer, hailed by the New York Times for his ‘refinement and spirit,’ has been a member of the Oregon Symphony since 2001. Ewer is also well known to Portland audiences for his regular appearances with the Portland Baroque Orchestra, Third Angle New Music Ensemble and Pink Martini. He is the founder and artistic director of 45th Parallel, a highly acclaimed chamber music series founded in 2009 featuring musicians of the Pacific Northwest.

Ewer has appeared recently as a guest recitalist at Yale University and at the National Library in Mexico City. He has performed at numerous summer festivals including the Tanglewood Music Center, San Luis Obispo Mozart Festival, Grand Teton Music Festival, Moab Music Festival and the Montana Baroque Festival.

His recent recording of the Complete Sonatas for Two Violins of Jean-Marie Leclair with longtime collaborator Adam LaMotte, was described as a ‘landmark recording’ and hailed for its ‘zest and athleticism’ by The Strad Magazine. Ewer is on the music faculty of Reed College in Portland.


Leo Eguchi – cello:

Leo Eguchi has been described as “copiously skilled and confident” (New York Times) with performances that were "ravishing" (New Bedford Standard-Times) and "played with passion and vitality" (Boston Music Intellegencer).

A native of Michigan, Leo has performed extensively across North America, Europe, Australia and Asia.  He enjoys an active and multi-faceted performance schedule – Leo can be heard in myriad chamber music settings, including the Willamette Valley Chamber Music Festival and Sheffield Chamber Players; in larger ensembles as principal cellist of the New Bedford Symphony, a member of the Pro Arte Chamber Orchestra, the New Hampshire Music Festival and the Portland Symphony; and frequent appearances with the Boston Pops.

A strong advocate of new music, Leo has premiered dozens of pieces by, and worked closely with, many notable composers including William Bolcom, Bright Sheng, George Crumb, Lukas Foss, Joan Tower, Ken Ueno, Yehudi Wyner, Jessie Montgomery, Gabriela Lena Frank, Evan Ziporyn, Ketty Nez, Osvaldo Golijov, and Daniel Bernard Roumain.


Recent performing highlights include several Grammy nominated recording releases from Parma recordings, concerto appearances, an artist residency and solo performances in Kabul, Afghanistan, and opportunities to share the non-classical stage with the likes of Pete Townshend, Queen Latifah, Melissa Etheridge, Demi Lovato, Brian Wilson, Kelly Clarkson, Peter Gabriel, Billy Idol, Jennifer Hudson, Nick Jonas, Josh Groban, and Audra McDonald, to name a few.


This fall, Leo joins the music faculty of Boston College, and was formerly the Assistant Conductor of the MIT Symphony Orchestra. His degrees include BM (Cello Performance) and BS (Physics) cum laude from the University of Michigan, and MM (cello performance) from Boston University, where he received the String Department Award for Excellence.  Leo, along with violinist wife Sasha Callahan and cat-obsessed daughter Freya, live in Boston and spend their non-musical time time appreciating the outdoors, food, and wine.  


Charles Noble – viola:

Charles Noble has been assistant principal viola of the Oregon Symphony since 1995. He holds degrees from the University of Puget Sound, the University of Maryland, and the Peabody Institute at Johns Hopkins University, where his primary teachers were Joyce Ramée, Joseph de Pasquale, Michael Tree, and Roberto Díaz.


During the summer months Charles serves as principal viola of the Sunriver Music Festival. He has also played with the Oregon Bach Festival orchestra since 1996, and was a participant in the 2015 Bang on a Can Marathon in New York City. Past festival appearances have included the Methow Valley Chamber Music Festival, Cascade Festival of Music, the Mt. Angel Abby Bach Festival, and the Ernest Bloch Music Festival. In 2002, 2004, and 2006, Charles was a featured performer at the International Viola Society’s annual Congress.


In addition to his orchestral work, Charles is an active chamber musician. He is a founding member of both the Arnica String Quartet and the Pyxis String Quartet, which is part of the newly-created 45th Parallel Universe musical collective.


Away from the viola Charles can be found riding his bike, reading, watching movies, enjoying craft beer and local wines, and cooking with his wife Stephanie and their two cats. 


He writes a classical music blog (soon to be joined by a podcast) at and tweets @nobleviola.


He plays on a 1997 viola by Gabrielle Kundert and a 2018 bow by Darrell Hanks.

James Shields — Clarinets:

James Shields joined the Oregon Symphony as Principal Clarinet in the autumn of 2016. Before relocating to Portland, James served as principal clarinet of the Canadian Opera Company in Toronto, as well as the New Mexico Philharmonic in Albuquerque. A graduate of The Juilliard School, James studied with Ricardo Morales, principal clarinet of the Philadelphia Orchestra. James has appeared as a soloist with the Oregon Symphony, New Mexico Philharmonic, Interlochen’s World Youth Symphony Orchestra (MI), and the Albuquerque Philharmonic (NM), and as guest principal clarinet with the Philadelphia Orchestra, the Malaysian Philharmonic Orchestra, Aspen Music Festival (CO), and Santa Fe Pro Musica (NM).  In addition to his orchestral and solo activities, Mr. Shields is increasingly becoming known to North American audiences as a dynamic and passionate performer of chamber music, making over 30 appearances annually in intimate settings throughout the United States and Canada.  James is the co-artistic director of Chatter, an Albuquerque-based chamber music organization that presents more than 70 concerts per year.  In over a decade of involvement with Chatter, Mr. Shields has programmed and performed in hundreds of concerts, and presented a diverse range of repertoire, from classical favorites to world premieres.  In Portland he is a member of cutting edge chamber music groups Fear No Music and 45th Parallel Universe, as well as a frequent guest performer with Third Angle New Music.  In addition to his performing activities, James holds an M.M. in composition from the University of New Mexico, and continues to compose regularly.


Megumi Stohs Lewis — violin:


Raised in Portland, Oregon, Megumi Stohs Lewis started playing the violin at age three, but grew up with a dream of studying agricultural science. The summer she turned sixteen, she attended the Olympic Music Festival, held on a beautiful farm in Washington State, and realized that music and the countryside were a perfect combination. Since then, Megumi has soloed with orchestras throughout the US and Japan, and has toured with ensembles throughout Australia, New Zealand, and Europe. Now residing in Boston, she is a co-founder of A Far Cry Chamber Orchestra; has been a guest with Yo-Yo Ma and the Silk Road Ensemble, the Radius Ensemble, the South Coast Chamber Players and the North Country Chamber Players. Starting in 2008, Megumi picked up the baroque violin and quickly fell for the gut strings and a variety of period bows. This love has led to performances with Boston Baroque, and the formation of Antico Moderno, a new ensemble actively commissioning contemporary works for period instruments. She also loves to fiddle and play rock and has regularly toured with Britain’s Jethro Tull. Megumi’s primary influences include her teachers Lucy Chapman at the New England Conservatory and Camilla Wicks and Ian Swensen at the San Francisco Conservatory. Especially in chamber music and period performance, Roger Tapping, Phoebe Carrai, Manfredo Kraemer, and Mark Sokol have been significant mentors.  Her early studies were guided by Edie Bennett, Bette Boyer, and Kathryn Gray. Megumi is currently satisfying her longing for agriculture through heirloom vegetable gardening.