As fans of Oingo Boingo and The Mystic Knights respectively, Tim Burton and Paul Reubens invited Elfman to write the score for their first feature film "Pee-wee's Big Adventure" in 1985. Elfman was initially apprehensive because of his lack of formal training and having never scored a studio feature, but after Burton accepted his initial demo of the title music and with orchestration assistance from Oingo Boingo guitarist and arranger Steve Bartek, he completed his score to great effect, while paying homage to his love of early film music and influential film composers Nino Rota and Bernard Herrmann. Elfman described the first time he heard his music played by a full orchestra as one of the most thrilling experiences of his life.