Sunday

Words and music We've often thought that "7Days" would make a great Broadway show. We've got music, dancers, drama, comedians, writers - even movies and artists (it can be a multimedia happening!) Of course, the linchpin of the show would be the narrator (we figure a wise, witty Jerry Orbach type would be fantastic).

Oh, well - while we wait for that, there's this: The Musical of Musicals (The Musical!). Eric Rockwell's ingenious show tells a simple story: an ingénue is threatened by a villainous landlord, with a handsome leading man waiting in the wings for his cue. The story is then told in a quintet of styles: a Rodgers and Hammerstein big show; a smart, sophisticated Sondheim production; a feathery Jerry Herman soufflé; an Andrew Lloyd Webber extravaganza, replete with roller skates and a falling chandelier; and a Kander and Ebb slither-fest. The show goes on at 2:30 p.m. at the Walnut Street Theatre's Independence Studio on 3, 825 Walnut St., and continues on a Tuesday-

through-Sunday schedule to June 27. Tickets are $30. Call 215-574-3550.

Monday

Remembering why This is a Memorial Day Celebration at the right place: the National Constitution Center, 525 Arch St. So many - soldiers, sailors, pilots, police officers, fire fighters, political leaders, journalists, people from all walks of life - have given their all in the name of the Constitution. Events include programs on national monuments from the Lincoln Memorial to the U.S.S. Arizona and dedication of the National Liberty Tree. The program runs from 10 a.m. to 3 p.m. at the center. Admission is $12; $11 for seniors; $8 for ages 4 to 12. Call 215-409-6600.

Tuesday

Two cool guys Norwegian folk-pop duo Kings of Convenience wrap bouncy acoustic beats around their tunes of quiet introspection. They play at 8 p.m. at the Theatre Of Living Arts, 334 South St. Tickets are $25. Call 215-922-1011.

Wednesday

Ooooooooooohhhh . . . hhhhklahoma, where the mmm-mmms sweepin' down the mmm! OK, we may not know the words, but we know the first letter! Sing-along Oklahoma! invites audience participation (free popcorn for those in costume) when the 1955 film version of the masterpiece screens at 7:30 p.m. at at the Bryn Mawr Film Institute, 824 W. Lancaster Ave., Bryn Mawr. Tickets are $9.50; $6.75 for seniors and students. Call 610-527-4008.

Dark shadows New York's REV Theatre Company has reimagined the Jacobean tragedy The Witch of Edmonton as a minimalist production with modern music. The 1621 play, about a persecuted woman who summons a devil-dog to take revenge on her Puritan tormentors, goes on at 8 p.m. Wednesday at the University of the Arts' Caplan Studio Theatre, 16th floor, 211 S. Broad Street, and continues on a Wednesday- through-Sunday schedule to June 12. Tickets are $20; $10 for seniors and students. Call 646-326-7950.

Thursday

Sing out, sister Singer-songwriter Diane Birch possesses a musicological curiosity and a set of powerful pipes. Her style-shifting debut Bible Belt, deftly limning a balance of pop and her religious upbringing, was one of 2009's best. She plays at 8 p.m. at the Trocadero's Balcony, 1003 Arch St. Tickets are $19. Call 215-922-6888.

Friday & Saturday

With strings Conductor Charles Dutoit leads the Philadelphia Orchestra in Strauss' Don Juan and Don Quixote with soloists Choong-Jin Chang, viola, and Arto Noras, cello, plus Mozart's Violin Concerto No. 6 with the live-wire Arabella Steinbacher as soloist. The concert is at the Kimmel Center's Verizon Hall, Broad and Spruce Streets, at 8 p.m. Thursday, 2 p.m. Friday, and 8 p.m. Saturday. Tickets are $10-$130. Call 215-893-1999.

Star-cross'd The Pennsylvania Ballet performs choreographer John Cranko's Romeo and Juliet, with a score by Prokofiev, at the Academy of Music, Broad and Locust Streets, at 7:30 p.m. Friday, 2 and 8 p.m. Saturday, 2 p.m. next Sunday, 7:30 p.m. June 10 and 11, and 2 p.m. June 12. Tickets are $21.50 to $126.50. Call 215-893-1999.

Pure pop One of our faves, pop perfectionists Matt Pond PA, play at First Unitarian Church, 2125 Chestnut St. at 8 p.m. Friday. Tickets are $12. Call 215-821-7575.

Five guys named Dave The Prism Saxophone Quartet has hit on a unique way of organizing a recital - performing works by composers named Dave. The program features works by David Biedenbender, David Laganella, David T. Little, David Ludwig, and Pulitzer Prize-winner David Lang, plus one by "honorary Dave" Ilana Rainero-de Haan. The ensemble plays at Settlement Music School's Curtis Branch, 416 Queen St, at 8 p.m. Saturday. Tickets are $20; $15 for seniors and students. Call 215-438-5282.