A wise-ish man once said, "The best way to spread Christmas cheer is to sing out loud for all to hear." That man was Buddy the Elf, and he knew what he was talking about. As a human raised as an elf in Santa's workshop, all Buddy wanted to do was celebrate Christmas and find his real father. That dual mission took him to New York, where he got to do both of those things, as well as fall in love and help his old pal, Santa, do the Christmas Eve run. The Broadway musical adaptation of the classic family film Elf retells Buddy's saga with more singing and, sadly, less Amy Sedaris. Elf is presented at 3 and 7:30 p.m. Saturday and Sunday (December 26 and 27) at the Peabody Opera House (1400 Market Street; 314-499-7600 or www.peabodyoperahouse.com). Tickets are $30 to $82.