Tennessee Walt will be among four acts playing at an April 21 benefit for the City Parks Foundation (which provides funding for New York City's parks), along with Tracey Horst, Recalculating and others. Walt will play a half-hour set of original country
songs. The benefit runs from 8 p.m. to 11 p.m., with Walt probably going on between 9:30 and 10. Admission $25. Venue: The Brass Owl, 36-19 Ditmars Boulevard, Astoria. (347) 848-0905.