Eyes closed, you'll swear you are at a live concert with Johnny Cash, Ozzy Osbourne, Garth Brooks, Kermit the Frog, and Elvis. Open your eyes and you're still not sure.

That's how Bob Byers, president, Tri-anim Health Services Inc., Sylmar, Calif., describes a show put on by Greg London, one of the leading corporate and association entertainers. “He's that good,” says Byers.

London is a man of many celebrity voices — more than 100 of them, in fact. He got his start in a rock band that toured colleges and then corporations until his show evolved into the musical comedy extravaganza it is today. For the past 15 years he's brought his act, “The Greg Show,” to groups across the country, touring with a four-piece band and a trunk load of wigs, sunglasses, and outfits that he uses to get into character while moving from one impression to the next. His one-man Ozzy Osbourne/Kermit the Frog duet rarely fails to bring down the house.

“It's important that I do a lot of voices because if they don't like Neil Diamond, lets hope they like Ozzy Osbourne, and if they don't like Ozzy Osbourne, maybe they'll like David Bowie. It's such rapid fire.” Rarely are two of his shows exactly the same because each is crafted for a particular client. “I write the show around a message or the type of show the client wants, then I'll use the characters to deliver the message,” says London. He even writes original songs for clients if they request it. For more information about London, go to ww.thegregshow.tv.