ダラス交響楽団
From 1977 to 1993 he was music director of the Dallas Symphony Orchestra and guest conductor of several orchestras in the U.S., Europe and Latin America. He recorded over fifty albums, most of them with the UNAM Symphony Orchestra, the Dallas Symphony Orchestra, and the London Symphony Orchestra. He was also appointed as principal conductor of the New Zealand Symphony Orchestra and was about to take up this post in January 1995 when he was killed.