Ms. Dumitrache, a Romanian-born violinist, has performed as a soloist with major Romanian orchestras and appeared in concerts across Europe, the Middle East, Mexico, and the United States, including at the Tonhalle Zurich Concert Hall and the Royal Opera House. She has participated in international festivals such as Round Top, Chautauqua, Castleton, and Belfort, and toured the U.S. for the 75th Anniversary of Porgy and Bess, later performing under Maestro Lorin Maazel in North America and Oman. Her teachers have included Irina Muresanu, James Alexander, and Daniel Podlovsky, and she has played in master classes with Yfrah Neaman, Jorja Fleezanis, and Jacques Israelievitch. Now active throughout New England, she performs with the New Bedford Symphony, Portland Symphony, Bach Beethoven Brahms Society, and Rhode Island Philharmonic, and has also appeared with artists ranging from the Trans-Siberian Orchestra and Sarah Brightman to Josh Groban, Andrea Bocelli, The WHO and in the Game of Thrones Live Tour.

Ms Dumitrache performs on a Paul Bailly French violin with a Stephane Tomachot bow.

Jeff Costa is the Co-founder of Sangha Yoga New Bedford; a personal trainer, meditation leader and Kripalu yoga teacher with over 30 years of experience in movement, health and wellness education. A graduate of Boston University’s College of Liberal Arts and the Kripalu School of Yoga and Health, Jeff  currently lives in New Bedford, Massachusetts. He leads fun and transformative class experiences that blend high-vibrational presence with a compassionate teaching style and authentic charm.

Adam Jeffreys is a violinist with a passion for contemporary music, pedagogy, and orchestral performance. He has worked with multiple educational organizations, including the Harmony Project, Stringendo Inc., and the Bard Conservatory. He was also a secondary violin instructor at the Oberlin Conservatory and a temporary violin teacher at the West Island Music Academy in Montreal. While Adam was attending the Oberlin Conservatory, he served on the administrative team for the conservatory’s annual children’s concert, where he narrated Peter and the Wolf in 2016. Adam was a graduate fellow with The Orchestra Now (TON) from 2020 to 2023, where he served as a concertmaster and principal second violinist. He was a concertmaster for the Lucerne Contemporary Festival Orchestra in the summer of 2021 and L’Orchestre de la Francophonie in the summer of 2019. He has also worked with other ensembles, including the Sinfonia de l’Ouest, Orchestre Philharmonique et Choeur des Mélomanes, and Montreal Music Collective (where he also served as a grant writer). Adam is currently a section second violinist with the New Bedford Symphony Orchestra and a contracted violinist with Symphoria in Syracuse. He has additionally served as the NBSO’s Education Specialist since 2024, supporting the orchestra’s growing education initiatives. Adam received a BM from the Oberlin Conservatory in 2018 and a MM from McGill University in 2020.