The Cantata Singers are set to present the second annual Boston Choral Festival on Oct. 17. Music Director Noah Horn will lead the Festival, which centers on Caroline Shaw’s “To the Hands,” a work focused on human reflection on shelter, empathy, and belonging. Other works on the program are Dietrich Buxtehude’s “Ad manus from Membra Jesu Nostri” and Shawn Kirchner’s {…}