HAPPENIN’ OTSEGO for TUESDAY, AUGUST 15 Cooperstown Summer Music Festival Presents Caroga Arts Ensemble MUSIC FEST—7 p.m. Caroga Arts Ensemble: A String Serenade. The hometown heroes of the Caroga Arts Ensemble return to CSMF for a summer string extravaganza, showcasing works spanning a variety of sounds and emotions from around the globe. Part of the Cooperstown Summer Music Festival 25th anniversary season. $30, adults; $15, students under 18. Purchase tickets in advance at www.cooperstownmusicfest.org. Otesaga Resort Hotel, 60 Lake Street, Cooperstown.…