The Unchambered series opens Oct. 9 with “Fantasy, Love and Sex(tet),” featuring cellist Richard Belcher and violinist Cecilia Belcher in a program that comprises Robert Schumann’s Fantasy Pieces Op. 73 for Cello and Piano, Erwin Schulhoff’s Duo for Violin and Cello, and Ernő Dohnányi’s Sextet for Clarinet, Horn, Piano, Violin, Viola, and Cello. 

Performing artists are Suzanne LeFevre, viola; Melissa Marse, piano; Maiko Sasaki, clarinet; Gavin Reed, horn.