Complex sentence: The incipit of hymn with a well-known melody which was used for the text recitation, was a common practice which was also known among Jewish and Sufi musicians who did never notate music.
Split into simpler sentences: The incipit of a hymn with a well-known melody which was used for the text recitation, was a common practice. It was also known among Jewish and Sufi musicians who did never notate music.