Attention friends of Dorothy: Judy's back! In "Judy Garland in Concert," technology brings us one step closer to the apocalypse by resurrecting The Wizard of Oz star and Liza Minnelli-birther to sing 27 of her biggest hits with... the Boston Pops.

The show blends original video of Garland with live accompaniment of the Pops' 70 instruments, and at a technical rehearsal in Manhattan yesterday, there she was: all four-feet-eleven-inches of Judy, tip-toeing across three massive projection screens. Looking a bit like a bobblehead with doe eyes, tiny and frenetic, Judy shimmies around, flinging the mic cord over her shoulder and belting out tune after familiar tune. She sings, she dances, she cracks wise! Also, she's dead! Remember when Celine Dion sang a duet with Elvis on American Idol? It's kind of like that, only in 2D. Remember, also, how it made you intrigued, mesmerized, confused? It's like that too.

The world's foremost (!) Garland historian, John Fricke, is the show's creative supervisor. He fell for Judy at age five and saw her in concert three times by age 16. He became the go-to guy 20 years ago, when he retired from singing on cruise ships and in nightclubs to document Garland's life. To truly appreciate Judy, Fricke says, "you've got to see Garland. She wasn't somebody you could have on while you made broccoli."

If it's true that Americans love comebacks, even from dead people, June 28 and 29 should see fans going ga-ga over a woman who OD'ed in 1969 being cinematically disinterred for an encore. After all, a similar Sinatra show ran in London for half of 2006. "Judy fans are going to be in floods of tears before she even walks onstage," Fricke promises. Was there ever any doubt? They're probably crying right now. Hell, if live Rufus Wainwright doing dead Judy Garland made them weep, imagine what kind of moisture dead Judy herself will occasion.