that is the director, a.j. abrams. >> john williams is conducting his "star wars" music. as a fan, i can't believe i even get to be here. >> reporter: abrams saw "star wars" when he was 11 and never outgrew his passion for the film. on this day, when he wasn't in the middle of the orchestra filming on his phone, he was racing around the sound stage. here, the fan. >> do you think it could work? >> let me just think. yes. it's incredibly! >> there, the director. >> you may need to make the dah, dah, repeat those bars just because it might be a little bit longer before we get into the flopper of the transport. >> reporter: i see you running around. i mean, you're very -- >> really? i felt so confidence. >> reporter: you're calm? >> yes. >> reporter: is it intimidating in any way? >> oh, yeah. >> reporter: oh, yeah? >> it's -- there are moments of just abject terror as to what we are all taking on. >> reporter: what he's taking on is this -- "the force awakens." disney is counting on abrams to expand the universe of "star wars" fans, while staying true vision. and the die-har