There is some information online about Carl Frei as an organ builder
and about certain organs that he built, but there is only passing
mention of him as a composer.  I am trying to find the composition
dates of some of his works -- Corso March, Luna Park March, Black
Forest Boys, Albert Schweitzer March, and Es lebe der Sport -- but
so far without success.

Is there a listing somewhere of Carl Frei's compositions?

Matthew Caulfield
Irondequoit, New York