Definitions by Mr. Initial Man
Frumpet
A brasswind instrument made by Getzen from the 1960s - 1980s that was intended as a cross between a trumpet and a french horn and usually keyed in F (with an Eb tuning slide as well). It was notorious for its tricky intonation.
Frumpet by Mr. Initial Man September 4, 2013
File Thirteen
File Thirteen by Mr. Initial Man August 30, 2010