"It's a style of singing that involves jumping back and forth between your regular voice and your falsetto voice," Lilly said. "It has deep roots in the country music of the '20s and '30s."
Lilly added yodeling to his gamut of Americana traditions, which also includes clog dancing, in his early twenties.
"It [yodeling] always attracted me," he said. "I thought it would be too hard, but I had someone teach me pretty easily."
Now Lilly is the teacher and in a special session before the show, as part of Acoustic Brew's series Folks Learnin' Folk, he will instruct anyone interested in learning to yodel.
"Anyone who likes to sing can do some sort of yodeling," Lilly said. "Nintey-nine percent of people who participate learn how."
The free yodeling session runs from 3:30 to 5 p.m. Saturday at the Center for Well Being.
"The Brew started [Folks Learning Folk] to get community involvement with the artists," said publicity manager Paul Rito. "This is how you learn folk, by going and listening and playing."
Rito also speculates the show will sell out and suggests the workshop as a way to get a flavor for Lilly's music.
Since 1998 Lilly has released two albums of roots-based original music, but he is by no means new to the folk music scene. Before his recent proliferation, Lilly was in several bands during the '80s, but postponed his musical efforts to raise a family, work at the Country Music Hall of Fame and Museum and edit a magazine about West Virginia folk life, which has been his day job since 1997.
"I've heard some of his music on the Internet," said opening act Dawn Kinnard. "It's very old-timey country sounding. He's more traditional than I am."
Kinnard, who performs in State College weekly, said she has written some songs in that style and also possesses a talent for yodeling.
"I can yodel a little," she said. "I learned how just by listening to old country records."
But don't expect to hear any during her performance. Kinnard is only playing for 20 minutes and said she plans on using that time to show off a couple new songs.
The show begins at 7:30 p.m. and admission is $12.