Dramatic tenor Max Lorenz usually made the most of a hard-edged and often intractable voice in singing the heroic roles of Wagner and the high-lying lyric/dramatic ones of Strauss. A riveting stage figure (trim and athletic in appearance), he was, in his prime, perhaps the most credible visual exponent of Siegmund and the two Siegfrieds. His musicianship, likewise, was more reliable than that of most other singers of the big German roles. Yet his voice was so unmalleable and his technique so unorthodox, that his performances required of the listener a considerable period of ad...