The tromboon is a musical instrument made up of the reed and bocal of the bassoon attached to the body of a trombone in place of the trombone's leadpipe, combining the reed and the slide for a distinctive and unusual instrument. The name of the instrument is a portmanteau of "trombone" and "bassoon". The sound quality of the instrument is best described as comical and loud. Schickele called it, "a hybrid – that's the nicer word – constructed from the parts of a bassoon and a trombone; it has all the disadvantages of both." This instrument is called for in the scores of P. D. Q. Bach's oratorio The Seasonings, as well as the Serenude (for devious instruments).