Unity College Centre for the Performing Arts, 42 Depot St., will host singer/songwriter Christopher Williams and special gues Ellen Tipper Saturday, March 6 at 7:30 p.m. Tickets are $18 for the concert, which is a benefit for the Ripple Effect Project.

Williams is one hard-working songwriter, storyteller and entertainer who has toured nonstop nationally for the last 10 years at a pace of more than 130 shows a year. He offers songs that are honest and confessional in performances that engage audiences with an appealing mix of intense passion and humor. With lush guitar work, soaring vocals and occasional percussion on a djembe hand drum, Williams has built a faithful following of listeners around the country.

A true independent artist, Williams has released eight albums on his own label. He has toured with Grammy Award winning band Jars of Clay and played with songwriter luminaries Arlo Guthrie, Phil Keaggy and David Wilcox. Williams has a heart for social justice issues and supports Blood:Water Mission and International Justice Mission; his newest studio release, “‘Sweet Redemption,” showcases songs about his recent trips to Kenya and Uganda.

Tipper, who performed last March at the Camden Opera House, combines the soul of Norah Jones, the complexity of Sarah Maclaughlan and the craftsmanship of Dar Williams. She has been called melodic and moody, sweet and sultry.

Ripple Effect Project is a nonprofit organization dedicated to supporting self-sustainable agricultural and educational endeavors of independent orphanages in Sub-Saharan Africa. Concertgoers are asked to bring non-perishable food donations to the show.

For more information, call 948-7469 or visit unityme.org. Scheduled next at Unity College Centre are the Celtic music-playing German band Cara Thursday, March 11 ($10); and The Toughcats, playing a benefit for Unity Barn Raisers, Friday, March 12 ($15). Both shows start at 7:30 p.m.

VillageSoup Art/Entertainment Editor Dagney Ernest can be reached at 207-594-4401 or by e-mail to dernest@villagesoup.com.