But the reference of Sidonius, quoted above,[1323] to the choir-singing in the church of Lyons in the fifth century, makes it probable that what is here referred to is either a revival of the old part-singing which had become usual in Hilary’s time, or else some specialized form of chant which was slightly different from the ordinary style. In any case we may safely conclude that Gaul played no unimportant part in the development of church-singing during the fourth century.