L.V.BEETHOVEN: piano concerto no°1 - Krystian ZIMERMAN;WIENER PHILHARMONIKER - YouTube
Agnes Zimmermann: Gavotte, Opus 14 - YouTube
Autoharp (center) by C.F. Zimmermann Co. in 1896–1899; (on left is Marxophone, on right is Dolceola) | Traditional music, Musical instruments, Great comet of 1812
Zimmermann, Frederick (1906-1967) | Academic Bass Portal