Karl (Carl) Hess (March 23 1859 - February 19 1912) Swiss composer and organist.
Invention in C Trio for 2 manuals and pedal. I cannot find much infomation about him but he studied at the Basel Conservatory and was organist of Bern Cathedral.
His Opus 6 is a Cello Sonata and he may have composed several sets of Lieder.