When a pair of Caltech grad students formed the Caltech Folk Music Society more than two decades ago, they probably never dreamed it would stand as such an enduring success. However, Brian Toby and Simon Davies’ dream lives on, continuing to bring the best singer/songwriters, folk performers, bluegrass bands and others who don’t necessarily fit into mainstream musical niches.

Caltech Folk Music Society is a nonprofit organization, with all proceeds going to pay performers and to recoup expenses of the operation.

Saturday night brings the duo of guitarist/songwriter Steve Gillette and singer/multi-instrumentalist Cindy Mangsen to the Dabney Hall Lounge.

Gillette boasts a long songwriting career, having penned hits by the likes of Linda Ronstadt, Kenny Rogers, Kathy Matea, Anne Murray and many others. “Back on the Street Again” and “Darcy Farrow” are a couple of his better-known works. He’s also widely recognized as one of the best guitarists in the unplugged world.

Mangsen has received raves for her guitar, banjo and concertina playing, as well as being a talented vocalist. She’s making a name for herself as a songwriter, with her recent disc, “Cat Tales,” an album all about cats. She’s also recorded albums with Priscilla Herdman and Anne Hills. She and Gillette have toured with Hills and Michael Smith.