There will be music in the air Saturday, Sunday and Tuesday as a result of several free programs scheduled at area public parks. The live performances have been scheduled in Dover, New Philadelphia, Uhrichsville and at Petersburg in Carroll County by Local 404 of the American Federation of Musicians. Two events will be held Saturday. At 6:30, there will be a performance by the Keith Morgan Band at Algonquin Mill at Petersburg, in coo peration with the Carroll County Historical Society. It will feature big band-type music from the 30s and 40s. The Dominic Greco Memorial Band will play patriotic selections at a Flag Day program, sponsored by Dover Elks Club, Saturday at 6 at Dover City Park. The Greco Band will perform a second concert Sunday at 7 in New Philadelphia’s Tuscora Park. The program also will follow a Flag Day theme and other selections will include compositions by Mancini and Irving Berlin. The concerts will be conducted by Fred Delphin. THREE OTHER programs will be held Sunday. At 2:30, the group L.S.B., led by Gregory Beitzel, will present contemporary commercial-type music on Deis Hill at Dover City Park. Also at 2:30, the rock group Krash, led by Robert Gibbs, will be at the Tuscora Park amphitheatre in New Philadelphia and Frank Fouts will lead the Country Harmony Boys in a program of country-western music at Uhrichs ville City Park. Three concerts are scheduled Tuesday, all at 6:30. Gibbs Grass, led by Timothy Gibbs, will be at Dover's Dels Hill; William Tomblin will lead the country-western group Six Pak at Tuscora Park; and Barney Burrell will lead the Sessions in contemporary music at Uhrichsville Park. All performances are provided in cooperation with city park officials with funds supplied in whole or in part by the U. S. Recording Companies Trust Fund, as arranged by Local 404.