Baritone Gérard Souzay sings arias from operas and songs.

Christian Thielemann is a compelling advocate for German music, and his Salzburg Festival 2020 program with the Wiener Philharmoniker is smack-dab at the heart of his favored repertoire. For his long-awaited return to the Summer Festival, he opens with Wagner's Wesendock Songs, considered musical sketches for the opera Tristan und Isolde, with terrific Latvian mezzo-soprano Elina Garanca as soloist. The centerpiece is Bruckner's Symphony No. Four,...