Their lovely timbres blended well and with a power that was sometimes missing from the first two lessons, where their individual voices, expressive as they were, sounded a shade too small for the large space.
Caroline Worra brings a persuasively carefree style and a lovely vocal timbre to "The Girl I Left Behind Me," the Spark story about a young woman waiting at a bus stop, troubled about something important she forgot at her office and irritated by her boss's constant whistling of the British folk tune for which the story is titled.
Between them came one of his most luminously lovely works: Timbres, Espace, Mouvement (1978), inspired by van Gogh's painting La nuit étoilée – like van Gogh, Dutilleux was a man with no time for formal religious belief but who recognised a spiritual element in what he did.
I love the timbre of his voice.
Stephanie Houtzeel, a mezzo-soprano with an appealingly creamy timbre, gave lovely, warm-toned readings of these works, but was at her best in a new score, Kevin Beavers's "Wandlebury Ring".
Bill Girolamo's guitar playing may take a back seat to Dana Hanchard's lovely soprano, but, since the tightly coiled, birdlike timbre of her voice can evoke memories of such legends as Suzanne Danco and Bidú Sayão, that is no mean place to be.
Still, her voice had a pleasant timbre, when one could hear it, and she gave a lovely account of "Deh vieni, non tardar" in the last act.
Two highlights were the mezzos: Atala Schoeck, in several smaller roles, had a lovely, clear sound, and as Penelope, Kristina Hammarström showed a firm, dark voice, its timbre matching the warm wood of her character's regal figure.
In a lovely, subtle touch in Ravel's miniature "Quel Galant M'Est Comparable?" Mr. Daniels jumps briefly into a lower register, anticipating the timbre of a bassoon, an effect that few women could achieve.
It's lovely — lovely, lovely, lovely, lovely.
