In honor of Beethoven’s 250th birthday, the Boulder Chamber Players commissioned an intriguing theatrical-musical event: Incessant Hum: Beethoven 2020, featuring the later works, which were composed after Beethoven became deaf. Artistic director Barbara Hamilton enlisted the aid of award-winning actor-director Mare Trevathan and playwright Jeffrey Neuman, himself profoundly hearing impaired, to create the piece. The task was daunting, Neuman says, “because I wanted to serve Beethoven well — both the music and the man — and because I’d never really written about hearing loss, a sub...