The Parvardigar Prayer (also known as The Masters Prayer) was composed by Meher Baba on August 13, 1953. To read it look under August in This Month in Meher Baba's Life (at the bottom of the page).
Pete Townshend of the rock band, "The Who", adapted the Parvardigar Prayer for the soundtrack.
Short biography of Meher Baba

O Parvardigar - The Archive Collection
DVD (includes both NTSC and PAL formats) Approximately 1 hour
This Limited Edition DVD box set includes:
Three versions of the much-loved and now restored O Parvardigar film; four audio tracks including the complete 21 minute recording of Pete Townshend's 1972 set at the third Amartithi in Meherabad, India; and an informative booklet on the history of the O Parvardigar film.