Last night the Gathering of the Vibes announced some additions to its 2009 lineup via its weekly webcast. Crosby Stills and Nash will make their Vibes debut along with Guster and The Machine. The acts join a roster of performers that also includes: Bob Weir & RatDog, moe., Levon Helm Band, Buddy Guy, Keller Williams with Moseley, Droll & Sipe, State Radio, George Clinton & P-Funk, Grace Potter and the Nocturnals, Deep Banana Blackout Perpetual Groove, Lettuce, JJ Grey and MOFRO, Strangefolk, Max Creek, Donna Jean Godchaux Band, Assembly of Dust and Dark Star Orchestra. The event returns to Bridgeport, CTs Seaside Park from July 23-26, with tickets now on sale.