Brewgrass makes the leap from local bluegrass festival to $20 ticket with the announcement of headliners War, Oteil Burbridge and Keller Williams. Besides having the chance to see the band that actually wrote "Low Rider" (War, that is), microbrew imbibers will be treated to a healthy all-day lineup of local folk, funk, bluegrass and rock bands. Kirk Rundstrom's Grain and Demise should prove to be a major draw, as should Winfield favorites Jeff and Vida. Keller Williams headlines Saturday night with his loopy one-man-jam-band act. Bass guitar idol Oteil Burbridge will also play a late-night Friday set at the Granada that will be free to all Brewgrass ticket holders.GASLIGHT STAGE2-2:30 Fourth of July3-3:30 Order of Chaos4-4:30 Danny Pound5-5:30 Julia Peterson and The Breaks6-6:30 The Yards7-7:30 Yuca Roots8-8:30 Poor Miners Union9-9:30 Cosmopolitics10-10:30 DJ Liondub11-11:30 DojoWEST SIDE FOLK STAGE4-4:30 Sam Shaber5-5:30 Louise Taylor6-6:30 Jeff and Vida7-8:30 Karen Savoca and Pete HeitzmanMAIN STAGE7:45-8:45 Honky Tonk Homeslice9-10:30 Keller WilliamsBEER BY:75th Street BreweryMcCoy'sBoulevard Brewing Co.Free State Brewing CompanyFlying MonkeyBlind Tiger BreweryThe Power PlantTwo day pass: $30Friday only: $20Saturday only: $20 Tickets available at Liberty Hall and all Ticketmaster outlets.