Each movement states the structural melody twice through, and always in the tenor. It is stylistically close enough to the work of John Dunstaple that it has been suggested that it may be his work, but no actual  link has been found.
Each movement presents the structural melody twice, consistently in the tenor voice, and shares a stylistic similarity with John Dunstaple's work, prompting speculation that it might be his composition, although no definitive connection has been established.