coronavirus pandemic, one of the leading management agencies has been acquired by an unusual buyer in an unconventional transaction.The San Francisco Conservatory of Music announced Tuesday that it had purchased Opus 3 Artists, which represents about 250 musicians and attractions, a group that includes conductors Daniel Barenboim, James Conlon, Christoph Eschenbach and cellist Yo-Yo Ma.David Stull, president of the San Francisco Conservatory of Music, would not reveal the monetary details of