This Caldecott Honor book from beloved children's book author Leo Politi, originally published in 1946, is set on Olvera Street, the site of Los Angeles' original Latino settlement, which is still preserved very much as it once was--a busy and colorful me'lange of small artisan shops, restaurants, and strolling musicians. Pedro tells of the community's Christmas tradition of the "posada," a procession that reenacts Mary and Joseph's pilgrimage to Bethlehem, and of the "piata," a papier-mch vessel filled with toys that children break open at the Posada's end. Pedro hopes to find a music box among the toys that will spill out of the piata. But first, he is asked to don the red wings of an angel and lead the procession. Because he not only is costumed like an angel but also sings like one, he is asked to lead the chorus in the traditional Posada song. Music and lyrics for the song are included, and with them children may create their own Posada pageant.