- penetrations VI [1972-II] (1972)voice (actress), trombone, electric organ, piano, percussion, double bass, processing, fixed medium and lights
- Pepeljuga ide na zur (1992), 50:00incidental music
- Per sonare (1979)trumpet, trombone and percussion
- Per tropo fede talor se perigola (Ca. 1300)2 voices and 6 musicians
- The Perfect Stranger (1982)2 flutes (alto flutes), 2 oboes (English horns), 2 clarinets, bass clarinet, bassoon, 2 horns, 2 trumpets, 2 trombones, tuba, harp, 2 pianos (celestas), 3 percussions, 3 violins, 2 violas, 2 cellos and double bass
- La Péri, 20:00
- Périodes (1974), 16:00flute, clarinet, trombone, violin, viola, cello and double bass
- Périple en Ges Treba (2010), 6:00piano
- La perle et l’oubli (1999-2002), 21:17ondes Martenot and stereo fixed medium
- piano
- Perséides (2013)
- Persephassa (1969), 24:006 percussions
- Perseveration Kids (1999-2000)piano
- PerSonAlia (2007), 90:0012 actors, moving audience and sound/light installations
- Pesma (1996-2006), 15:00mezzo-soprano, flute, 2 clarinets, piano, violin, viola and cello
- Pet (2008)
- Le petit livre des Ravalet (Ca. 1983), 25:00spoken opera3 narrators, early music instruments and fixed medium
- La petite mariée (2013)chorus and string quartet
- La petite musique de les spazmes (2015), 10:00
- Petite musique sentimentale (1984), 10:11piano and stereo fixed medium
- Petits Traités (2004), 25:00comprovisation score for 2 electric guitars
- Petroglyphs (2018)piano, violin, viola and cello
- Pfff, 1:00soundtrack for the short film Pfff by Susan Wolf; genre: animation frame-by-frame and 2D
- Phases (1956)piano
- Phénix (2009-10), 12:00orchestra
- Phénomènes (2010), 13:00violin, cello and piano
- Phonobellow (2015), 60:00
- Phonophonie (1963-64)2 voices and other sound sources
- Phonotopographie (2012), 18:00
- stereo fixed medium
