Wikipedia
P-Funk (also spelled P Funk or P. Funk) is a shorthand term for the repertoire and performers associated with George Clinton and the Parliament-Funkadelic collective and the distinctive style of funk music they performed. The P-Funk groups had their heyday in the 1970s and continue to attract new fans thanks both to the legacy of samples they bequeathed to hip hop and the live shows that the bands continue to perform. Their music was very aspirational, which is symbolized by their Mothership that has since been acquired by the Smithsonian. Notable P-Funk albums include Funkadelic's Maggot Brain and Parliament's Mothership Connection. The differing styles of these albums showcase the wide range of P-Funk's music. " Maggot Brain was an explosive record" of Jimi Hendrix inspired rock while Mothership Connection was an "album of science-fiction funk." While this rock/funk differentiation is what normally separated Funkadelic from Parliament, the bands consisted of many of the same members and performed live on tour together. Hence, the two groups are often described under the one moniker Parliament-Funkadelic.
P-Funk recordings have been 'extensively' sampled in rap and hip-hop music, especially by Dr. Dre and other West Coast acts, beginning in the late 1980s and being particularly associated with the G-funk style of rap.