The Franciscan mission repertory in California, c.1770–1830, includes numerous collections of chant and polyphonic music. Scholars have assumed some direct connection with music used in Mexico, but this assumption remains difficult to prove on the basis of the surviving Mexican repertory, which is mostly associated with cathedrals. Chant and polyphonic settings from the Liturgy for the Dead in Californian sources are compared with those from Mexico. Mexican cathedral music, even in the 1790s, reveals connections with pre-Tridentine liturgical traditions; but the California repertory is based on different liturgical and chant traditions. This supports William J. Summers's hypothesis that polyphonic works in the California Missions are based on a peripheral tradition associated with the religious orders.