Thomas Stewart as Der Wanderer:
The clip is from a concert in Vienna in 1985. Leonard Bernstein conducted the Vienna Philharmonic Orchestra in Die Walküre Act 3, scene 3 and Siegfried Act 3. Here we see the end of the scene between Wotan and Siegfried in Act 3 of Siegfried. James King sings Siegfried for the first (and only?) time in his life.