Brian Oberlin, internationally-acclaimed mandolinist, has performed with award-winning bands throughout the US. He’s founder/director of River of the West Mandolin Camp and the Oregon Mandolin Orchestra. Oberlin plays ragtime and swing, crooning Irving Berlin, George Gershwin alongside Stevie Wonder and Allman Brothers songs. He performs for PortlandFolkmusicSociety Friday April 11. (www.mandoberlin.com)

Aaron and Nicole Keim aka The Quiet American share the bill. The duo has been featured at ukulele festivals here and abroad. See quietamericanmusic.com .

The concert is at St. David of Wales Episcopal Church, 2800 SE Harrison beginning at 7:30 pm. Tickets are $17, $14 for PFS Members, $8 ages 12-18 (under 12 free). Advance tickets available online at www.portlandfolkmusic.org.