Edward Villella will head The Boston Ballet Company's program tomorrow night at 8:00 p.m. George Balanchine's Apollo is the first and most highly acclaimed performance of the night. Other performances in the first of the 1971-72 Artists Series, are The Dolly Suite, Tchaikovsky's Pas De Deux, and Speed Zone. The price for non-reserved, individual tickets is $5 and the price of the season tickets is $20. Tickets may be obtained at the Artists Series Office on the Fourth Floor of Newcomb Hall.