For someone who has the most delicious voice, Geoffrey Holder sure doesn't like to say very much.

Take his show, "Instant Theater," a one-man production he invented about 20 years ago. "I talk and the audience talks," he says. "And I have a good time and the audience has a good time. We talk about everything."

Anything in particular?

"I do not like to say," he says in that lush Trinidadian baritone. "It spoils the spontaneity. I don't want to give the audience any preconceived ideas."

Well, what's it like?

"It's personal and always different. It's very free."

He doesn't much like talking about his more famous characters either: the Uncola man for the 1970s 7-Up ad campaign, and the bad guy in the James Bond film "Live and Let Die." He wants to be recognized for what he is doing today, such as the nearly finished theatrical work "Odyssey of Anna in Her Red Pumps," based on "The Red Shoes." Then there's the role he's preparing for the new Broadway production of Truman Capote's "House of Flowers." And the television pilot he just completed. But he's mum on the details.

Reeeeal quiet.

What he really loves to talk about is his art collection. He has hundreds of works in his 5,000-square-foot loft in SoHo. Things he's acquired over the years. Sculptures, paintings and drawings from the Deep South, Cuba, Haiti, Mexico and Africa. They all have to do with religion -- from Roman Catholicism to Haitian voodoo. Enough good pieces, he says, to hold an exhibition, which is exactly what he is doing next year in Katuna, N.Y.

Geoffrey Holder will present "Instant Theater" at the Museum of Natural History's Baird Auditorium on Tuesday night at 7:30. Tickets are $12 for Resident Associate Program members, $16 for non-members. For information call 202-357-3030.