EARLY MUSIC IN THE AMERICAS, REVIVED
BERKELEY, CA—One of the newest and most versatile early-music singing groups locally is Tactus SF, now seven years old, affiliated with the San Francisco Early Music Society. Mention “early music” and you expect to hear polyphonic from Europe. Not so, this time. This 20-member a cappella group put together an entire program of early New-World music, “Cantus Mexicanus,” digging out sacred renaissance choral music of “New Spain,” as it was then called—-music that we almost never get to hear, part…