COLBY ROBERTS (tenor) first sang with the American Bach Solists in 1992. His concert performances have taken him across the United States, and to Europe and Israel. Bay Area credits include performances with Berkeley Opera, Livermore Opera, Dramma per musica and San Francisco Lyric Opera. He has also performed several roles with San Francisco Opera. Last summer he was the tenor soloist for Verdi's Requiem at the Mendocino Festival.