Bassoonist Kirsten Boldt returns to the Music at St. Marks concert series for her sixth annual free Bassoon and Friends concert at 7:30 p.m. today at St. Marks Episcopal Church, Fifth and Oakdale, Medford. Joining her will be Margaret Evans, organ; Laurie Hunter, piano; Barbara Evans O'Donnell, alto; and Debra Harris, flute. They will perform music by Beethoven, Mignone, Telemann and Phillips. A reception will follow in the church's Parish Hall. Call 858-8037.