The Duxbury Music Festival holds its opening concert and reception next Sunday at 6 p.m. at the home of Diane and Sherm Hoyt, under a tent overlooking the Back River. “It’s one of our more affordable concerts. It’s the one that welcomes the community to the Duxbury Musical Festival,” said Anne Smith, campus manager for the Duxbury branch of South Shore Conservatory. The Duxbury Music Festival Orchestra, consisting of conservatory students and faculty, will perform Mendelssohn’s Double Concerto in D Minor, as well as Jean Françaix's Divertissement, Joaquin Turina's “Scene Andalouse,’’ and Steve Reich's “Six Marimbas.’’ Guests are asked to park at the Ellison Center for the Arts, 64 St. George St. Shuttles will run from the Ellison Center to the concert beginning at 5 p.m., Smith said. Tickets for the concert and reception are $40.