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Founded in 2019, The X-tet is Boston Baroque's premier period instrument chamber ensemble. The “X” represents the fluidity of the number of players involved, depending on the concert.
Drawing membership from Boston Baroque’s world-renowned orchestra roster, this ensemble’s core members include GRAMMY-nominated concertmaster Christina Day Martinson, assistant concertmaster Jesse Irons, and principal players Sarah Darling, violin, Jason Fisher, viola, and Michael Unterman, cello.
UPCOMING CONCERTS
Sounds from Spain
February 7, 2026, 7:30PM | Sanders Theater
This program, curated by Boston Baroque Associate Artistic Director Christina Day Martinson, features arrangements of works by Spanish composer Olivia Pérez-Collellmir, coupled with works from the Spanish Baroque featuring tenor Karim Sulayman.
ARTISTS include Karim Sulayman (tenor), Christina Day Martinson (violin), Sarah Darling (violin), Jason Fisher (viola), Cullen O’Neil (cello), Michael Leopold (theorbo & baroque guitar), Jonathan Hess (percussion), and Olivia Perez-Collellmir (composer).
Sounds from Turkey & The Ottoman Empire
May 30 & 31, 2026, 7:30PM & 3:00PM | Multicultural Arts Center
This program features the world premiere of a commission by celebrated Turkish composer Mehmet Ali Sanlıkol and will also include works from the Ottoman period. The X-tet will be joined by members of Sanlıkol’s ensemble, DÜNYA.
ARTISTS include Christina Day Martinson (violin), Jesse Irons (violin), Jason Fisher (viola), Hannah Collins (cello), Avi Stein (organ/harpsichord), Mehmet Ali Sanlikol (composer, oud, ney, voice), and Members of DÜNYA.
“The idea of the X-tet is to bring the energy and virtuosity of Boston Baroque into a dynamic small ensemble where new possibilities can naturally arise”
JOIN THE X-TET CIRCLE
For those who want to engage more deeply with Boston Baroque’s boldest, most innovative work. Support the mission of the X-tet and get even closer to the musicians shaping the future of classical music.
Tickets purchased separately
Benefits include:
Early access to purchase X-tet tickets
15% off tickets
Meet-and-greets with musicians
Exclusive artist notes and bonus content
“Historical performance can blossom beautifully in a more intimate setting, where each group member has the space to embellish, experiment, and extemporize! The idea of the X-tet is to bring the energy and virtuosity of Boston Baroque into a dynamic small ensemble where new possibilities can naturally arise.”
Core Members
Drawing membership from Boston Baroque’s world-renowned orchestra roster, the X-tet is the organization’s first-ever period string chamber ensemble. Core members of the X-tet include GRAMMY-nominated concertmaster Christina Day Martinson, assistant concertmaster Jesse Irons, and principal players Sarah Darling, violin, Jason Fisher, viola, and Michael Unterman, cello.
JESSE
IRONS
Violin
SARAH
DARLING
Violin & Viola
JASON
FISHER
Viola
MICHAEL
UNTERMAN
Cello
AVAILABLE on-demand
"The X-tet: A Concert Documentary"
THIS PROGRAM IS SUPPORTED IN PART BY A GRANT FROM THE NEWTON CULTURAL COUNCIL, A LOCAL AGENCY WHICH IS SUPPORTED BY THE MASS CULTURAL COUNCIL, A STATE AGENCY.
