He was at the Met again in 1995 singing Jacob Schmidt in John Dexter's production of Rise and Fall of the City of Mahagonny.
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In 1985, Neumann recorded the role of Jim Mahoney in Aufstieg und Fall der Stadt Mahagonny (opposite Anja Silja, and conducted by Jan Latham Koenig, for Capriccio), and, in 1998, made his debut at the Metropolitan Opera in the title role of Siegfried, with Sir Donald McIntyre, and James Levine conducting.