Pari intervallo is a composition by Estonian composer Arvo Pärt, written in 1976 in four parts without fixed instrumentation. The composer later made versions for organ (1980), four recorders (1980),cfr. UPC:4032824000399 2006 EZ, QNG clarinet, trombone and string orchestra (1995), saxophone quartet (2002), two pianos or piano duet (2008), and eight or four cellos (2010). Pari intervallo was one of seven works premiered in 1976 under the title tintinnabuli, the name of compositional style created by the composer.
Structure The work is in one movement and is approximately 6 minutes. It is in E minor and consists of four voices; first and third playing only notes from E minor chord and second and fourth (pedal bass) playing melody in parallel thirds (2 octaves apart).
Organ stops Notated organ stops in the score: Manual: (soft) 8 ft (ev. Quintaton 8 ft, ev. + Trem.) Pedal: 16 ft (8 ft), (coupled)
See also List of compositions by Arvo Pärt
References
https://www.universaledition.com/sheet-music-and-more/Pari-intervallo-fuer-Orgel-Paert-Arvo-UE36995 http://www.allmusic.com/composition/pari-intervallo-for-organ-mc0002370977