“There was much of the beautiful, much of the wanton, much of the bizarre, something of the terrible, and not a little of that which might have excited disgust.” This line from Poe’s story, “The Masque of the Red Death,” also could describe André Caplet’s 1909 work based on the tale, “Conte Fantastique.” The Aeolus String Quartet, with international touring harpist Sivan Magen, will perform the piece Saturday evening, a night’s worth of revelry compressed into 15 beautiful, bizarre minutes that end, fortunately, without death by plague. The up-and-coming Aeolus, whose cellist is the Richmond-raised Alan Richardson, also will give a free concert Saturday at noon in the main Richmond Public Library. Flutist Mary Boodell and cellist James Wilson join the group for more music Saturday, Oct. 29, at 7:30 p.m. at the First Unitarian Church of Richmond. $5-$25. 519-2098.