BIG DEAL EVENTS

Liberty One

Observation Deck

On a clear day, you can see straight to Wyeth country from the 57th floor of the city's first bigger-than-Billy Penn skyscraper. The high-up, high-tech experience makes for a selfie-worthy date.

1650 Market St., 10 a.m.-10 p.m. daily, $19, $14 ages 3-11, 215-561-DECK, phillyfromthetop.com.

RiverRink Winterfest

Penn's Landing's ice and cozy cabins reopen for business today, and run all manner of craft workshops, theatrical performances, juggling and DJ'd music all weekend to celebrate. Rink and fest stick around through Feb. 28.

South Columbus Boulevard and Walnut streets, 11 a.m.-midnight

tonight, noon-midnight tomorrow, noon-6 p.m. Sunday, free to enter,

$3 to skate, $10 skate rental, 215-922-2FUN, delawareriverwaterfront.com.

STAGES

'Nutcracker 1776'

The Rock School's annual, abbreviated, Colonialized take on the holiday ballet, as performed by spectacular student dancers, is sugarplum perfection for families.

Merriam Theater, 250 S. Broad St., 7 tonight, 1 & 4 p.m. tomorrow, $33-$48, 215-893-1999; Centennial Hall, Haverford School, 1 & 4 p.m. Dec. 12-13, $15 & $25, therockschool.org.

'Matilda the Musical'

Broadway Brit hit does up Roald Dahl with grit and flash in smart tale of a girl and her school chums versus very silly and (somewhat) scary adults.

Academy of Music, Broad and

Locust streets, 8 tonight, 2 & 8 p.m. tomorrow, 1 & 6:30 p.m. Sunday, $20-$115, 215-731-3333, kimmelcenter.org.

'The Book of Mormon'

How popular is this wry Broadway show about Mormons on a mission, as rendered by the guys behind "South Park"? So popular, it's here all month.

Forrest Theatre, 1114 Walnut St., times vary through Dec. 27, $67-$142, 800-872-8997, kimmelcenter.org.

Kulu Mele

Dance and drum combine in "Celebrating Senegal," two new commissions by choreographer Marie Basse-Wiles. African bazaar (with Santa) precedes show.

Painted Bride Arts Center, 230 Vine St., 4 & 7 p.m. tomorrow,

1 & 4 p.m. Sunday, $30, $15 under 13, 215-925-9914, paintedbride.org.

MUSIC

Earth Wind & Fire

"Let's Groove" tonight. And

tomorrow night. By the beach.

Borgata, 1 Borgata Way, Atlantic City, 8 tonight & tomorrow, $60-$90, theborgata.com.

Philadelphia Orchestra

Gianandrea Noseda continues his conducting weeks with two Italian works, Rossini's Overture to "The Thieving Magpie" and Alfredo Casella's neglected Second Symphony. In between, hot Macedonian pianist Simon Trpceski solos in Rachmaninoff's beloved Rhapsody on a Theme of Paganini, premiered by this orchestra in 1934.

Verizon Hall, Kimmel Center, Broad and Spruce Streets, 8 tonight & tomorrow, $35-$142, 215-893-1999, kimmelcenter.org.

Philly Pops

This program combines Disney images with music from the popular films "Frozen," "Beauty and the Beast," "The Little Mermaid," "Mary Poppins," "Aladdin" and "The Lion King."

Verizon Hall, Kimmel Center, Broad and Spruce streets, 3 p.m.

tomorrow, $65-$90, 215-893-1999, kimmelcenter.org.

WDAS Holiday Jam

Our own Jill Scott headlines bill that includes New Edition, SWV, Babyface, Faith Evans, Tyrese and Jazmine Sullivan. And you thought an organ had pipes.

Wells Fargo Center, 3601 S. Broad St., 6:30 p.m. tomorrow, $39.50-$149.50, 800-745-3000, livenation.com.

Will Downing +

Kenny Lattimore

Rhythm and blues and jazz make the all-of-a-sudden switch to Christmas much, much smoother.

Scottish Rite Auditorium, 315 White Horse Pike, Collingswood, N.J., 8 p.m. tomorrow, $39.50-$59.50,800-745-3000, ticketmaster.com.

Choral Arts Society

Seven Philadelphia composers premiere their holiday offerings, followed by Bach's Cantata 61, the majestic "Nun komm der Heiden Heiland" ("Now come, Savior of the heathens").

St. Clement's Church, 20th and Cherry streets, 7 p.m. Wednesday, suggested contribution $20, 267-240-2586, choralarts.com.

Amerita Chamber Players

Philadelphia Orchestra musicians and alumni delve into the enormous catalog of Italian Baroque gems with exuberant style. They'll play music by Vivaldi, Scarlatti, Locatelli and a rare female composer from that period, Maddalena Lombardini.

Temple Beth Zion, 300 S. 18th St., 8 p.m. Wednesday, free, 215-735-3250, aisphila.org.

- Compiled by Tom Di Nardo,

Lauren McCutcheon