GERMAN WW2 ORIGINAL POSTCARDS SET OF 3

This is a set of 3 original postcards.  Two of the cards look like they are related to music and have lyrics to songs on them. One of the cards is titled: Stec' ich in Finst'rer Mitternacht:    I Stand in the Midnight Dark.  The other musical postcard card is titled Rosmarie.

The 3rd or middle postcard is titled:  Des harten infanteristischen Kampfes stolze Krone is der Sieg.: The proud crown of hard infantry combat is victory.

Two of the postcards have not been mailed or stamped, one card has been used, mailed, addressed and stamped.  Dated March 20, 1942.