Mezzo-soprano Lydia Heather Knutson has performed around the world, appearing on radio and at leading international music festivals in the US, Canada, Europe, Latin America, and Australia. She is a founding member of the medieval ensemble Fortune’s Wheel, sang for many years with the women’s ensemble of Sequentia, Cologne, and has sung with Blue Heron since 2003. Locally, she has performed with the Boston Camerata, Boston Cecilia, La Donna Musicale, and Emmanuel Music, among others. She has recorded for Dorian, Erato, and BMG Classics/Deutche Harmonia Mundi. In addition to singing, Dr. Knutson is a chiropractor and the director of the Lydian Center for Integrative Medicine in Cambridge.