Taking care of business at the very edge of the continent, three veteran West Coast musicians, each with roots back East, reunite a year after their live recording for a series of swinging evenings in December. Guitar virtuoso Al Viola, flute legend Sam Most, and bassist/producer Richard Simon get together on three consecutive Tuesdays--December 3, 10, and 17--at the Sheraton Four Points LAX, 9750 Airport Boulevard, from 7 to 11 pm. Creatively re-shaping familiar tunes, this trio manages to …