- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Heroes and Heroines of Bayreuth: Franz Volker (Historical Recordings 1928-1941) · 2013
- Wagner in Stockholm: Recordings 1899-1970 · 2012
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011
- Hans Knappertsbusch: Early Recordings 1928-1941 · 2011