Yonder Mountain String Bands Adam Aijala and Ben Kaufmann will offer an evening of music Lyons, COs Wildflower Pavilion on September 20. The longtime friends are expected to run through a mix of original material, covers and traditional music, from Celtic to Americana. The duo also promises to run through some of the rarer songs from the Yonder canon and hint that they may try their hand at some completely-acoustic (no mics, no plugs) music. Meanwhile, Yonder will appear at Bozeman, MTs Emerson Cultural Center this evening with Keller Williams.