HER name may not "sing," but Ali Spuck sure can. The songbird's Here I Am alit July 26 in the Liberace Museum's Cabaret Showroom and it's got what it takes to become a Sunday afternoon mainstay.

Spuck, who comes to Vegas by way of Texas, New York and Los Angeles, adds vocal firepower to a growing series of musical matinees at the museum. Along with thrice-weekly recitals by Philip Fortenberry, the Showroom recently hosted a limited run byJersey Boys' Erich Bergen (whose deadpan interpretation of Britney Spears' "Not Yet a Woman" alone argues for a regular Bergen gig).

Despite her gamine-like appearance, Spuck has the poise of a showbiz veteran, along with a natural flair that commands the room. Her luminous and winning personality is allied to a brassy, Broadway-style voice tempered with sweetness. Given her vocal amplitude, Spuck probably doesn't need a microphone in the 86-seat showroom, but she handles it suavely.

Spuck's flawless vocal production was evident straight away. "Frank Mills," from Hair, showed off her long-lined and smooth breath control -- as well as her ability to even make the words "Hell's Angels" blossom. She's a soprano with the top notes to prove it, which set up a droll lament about forever being relegated to the alto section and its unmemorable harmony lines. Spuck doesn't have much of a lower register, but what might otherwise be a flaw here works as part of the musical in-joke.

Broadway-centric though her program was, Spuck threw in some country & western, done with touching simplicity. She also struck comedic sparks with Alan Nielsen's "Chanson Flambé," an orgy of ubiquitous French terminology.

The heart of Here I Am was an all-Gershwin set. "Someone to Watch Over Me" was not only stylishly sung but displayed all of Spuck's touchstone qualities: exceptional control of dynamics, pitch and phrasing. "Summertime" from Porgy and Bess, was initially spun out in what's called a fil di voce (the English equivalent, "thread of voice," just doesn't sound as flattering) before expanding into torchy intensity. Likewise, "The Man I Love" was alternately beguiling and rafter-raising.

Stylishly tickling the ivories was Jersey Boys pianist Tish Diaz, who proved a tactful and quick-witted accompanist. She got a solo turn with a syncopated, gamboling rendition of "Our Love is Here to Stay." That's no ordinary piano that the unflappable Diaz is playing, but Liberace's custom-made, mirrored, nine-foot Baldwin grand, formerly part of the King of Bling's Las Vegas Hilton show.

Playing less than an hour, Here I Am is a delightful serenade that's over far too soon. Even amidst the blingtastic Liberace Museum, Ali Spuck is a gem who scintillates brightly indeed.

Here I Am takes place 2:30 p.m. Sundays at the Liberace Museum, 1775 E. Tropicana Ave. Tickets: $15. Info: 798-5595 orwww.liberace.org