OJT

Leonard Slatkin, conducting Verdi's "La Traviata" at the Metropolitan Opera, "showed up for rehearsals not fully knowing the score," Anthony Tommasini writes in The New York Times:

http://www.nytimes.com/2010/03/31/arts/music/31traviata.html?hpw

UPDATE: After one performance and a chorus of pans from the New York critics, Slatkin withdraws from the Met production, Dave Itzkoff reports in The New York Times:

http://www.nytimes.com/2010/04/02/arts/music/02slatkin.html?ref=music