Abstract
Arnold de Lantins, a composer widely represented in the musical sources of the 1420s and 1430s and a singer in the papal chapel from 1431 to 1432, stood at the forefront of stylistic developments of the early fifteenth century, yet his music is hardly known among music historians and performers today. Although he was one of the first composers to link the Gloria and Credo by motto beginnings and to write a complete, musically unified Mass cycle, few of his Ordinary settings are available in modern transcription and little has been written about them.