Believe it or not, there are TWO records called Schlagers!. Apart from the Shadowy Men single, there is a promotional-only, double-album compilation called Schlagers! released in 1970 on Warner Brothers records. I can only assume the title of the Shadowy Men single is a reference to this album.

Here's what's on the other Schlagers!:

SIDE ONE:

SIDE TWO:

SIDE THREE:

SIDE FOUR: