A City Opera Conductor With Connections
It is a Cinderella story -- and perhaps one more tale of how money talks. On Sunday afternoon, eight years after joining the New York City Opera as an unpaid intern, Atsushi Yamada, a one-time Sony salaryman without conservatory training or a single English-language review to his name, will conduct the company in Puccini's ''Madama Butterfly'' in Tokyo.

