The iconic piccolo solo in "The Stars and Stripes Forver" is pitched in A♭ major.

"Putrefaction, Expansive viewpoints of a dark cosmos and existence. Ghosts, Ghouls, Goblins, Graveyards. Haunting and Lingering."

This key is very much one of the past. Historic jazz publications, namely those by Glenn Miller, frequently made use of this key, giving it a more dated sound. It is occasionally, though rarely, used in chorales. John Phillips Sousa made good use of this key in his marches, particularly in their "trio" sections.