[1][2] He recorded the part of Don Fernando in Beethoven's Fidelio for the NDR, conducted by Carl Bamberger [de], with Gladys Kuchta and Julius Patzak in leading roles.
[3] In 1960, he sang the part of nobleman from Genova in a recording of Franz Schreker's Die Gezeichneten of the NDR, with Thomas Stewart and Evelyn Lear in leading roles, conducted by Winfried Zillig.
[5] Wenk appeared in oratorios such as Haydn's Die Schöpfung and Ein Deutsches Requiem by Brahms, performed by the Städtischer Musikverein Gütersloh and the Nordwestdeutsche Philharmonie in 1959, conducted by Mattias Büchel.
In a 1966 recording of the dramma per musica Preise dein Glücke, gesegnetes Sachsen, BWV 215, he performed the rage aria Rase nur, verwegner Schwarm.
[9] He sang the bass part in Bach's St Matthew Passion in a live recording conducted by Ljubomir Romansky [de] at the Salle Pleyel, with Josef Traxel as the Evangelist and Helmut Fehn as the vox Christi.