René Kollo is a German operatic tenor, especially known for his Wagnerian Heldentenor roles. He also performed a wide variety of operas and operettas, and made several recordings.
Kollo at a ZNS – Hannelore Kohl Stiftung benefit concert in 1986. From left to right are Kollo, journalist Carolin Reiber, Hannelore Kohl, tenor Peter Seiffert, soprano Lucia Popp, and actor Günter Strack.
A heldentenor, earlier called tenorbariton, is an operatic tenor voice, most often associated with Wagnerian repertoire.
Heldentenor Ludwig Schnorr von Carolsfeld and his wife, Malvina, in the title roles of Tristan und Isolde, 1865.