"Peaky P-key" is a term that refers to a specific type of musical key signature used in music composition. It is characterized by its unique arrangement of sharps or flats, which helps define the tonality of a piece. This key signature can influence the mood and style of the music, making it an essential element for composers and musicians. The name "Peaky P-key" is often associated with the Peaky Blinders, a popular television series set in post-World War I Birmingham, England. The show features a gang known for their distinctive fashion and music, which may inspire the use of this key in various soundtracks and compositions related to the series.