A two-day festival of Western music celebrating the life and songs of the Sons of the Pioneers' Bob Nolan takes place on Saturday and Sunday, May 28 and 29. Old Tucson visitors can hear members of the Arizona Chapter of the Cowboy Music Association perform from 10 a.m. to 6 p.m. each day for the regular admission price: $16.95 for adults; $10.95 age 4 to 11; free younger than 4. Special, 6:30 p.m. performances are $20: The Bill Ganz Band performs Saturday; and Syd Masters and The Swing Riders perform Sunday. Admission for both days and evenings is $50. Call 883-0100, or visit oldtucson.com for tickets and more information.