"105927" . . "Sommerruh, zangstemmen (2), piano, WoO 007 (1849)" . . . . . . "SCHAD, CHRISTIAN |f [tekstdichter]" . "150534" . "96331" . . "105927 150534 173886 173890 96331 SCHAD, CHRISTIAN |f [tekstdichter] SCHUMANN, ROBERT |f [componist] Sommerruh, zangstemmen (2), piano, WoO 007 (1849)" . . "96331" . "173886" . "Sommerruh, zangstemmen (2), piano, WoO 007 (1849)" . . "173890" . "SCHUMANN, ROBERT |f [componist]" .