Joe,
that is most probably the long serving Stabstrompeter of Feldartillerie-Regiment von Scharnhorst (1. Hannov.) Nr. 10, Obermusikmeister Eule. He is wearing the 1908-1912 pattern shoulder boards. Herr Eule had been the Stabstrompeter of FAR 10 from at least 1898-1911. He was awarded the Allgemeine Ehrenzeichen in Gold in the Ordensfest of January 1898 whilst holding the rank of Militär-Musikdirigent.
Regards
Glenn