product line. and that little studio -- >> to infinity and beyond. >> reporter: -- pixar's 12 films have an average gross of nearly $600 million each. that's the best record in hollywood history. jobs sold pixar to disney for $7.4 billion. so how did it all happen? the main catalyst for jobs' renaissance had to be itunes. ♪ hello, hello >> reporter: apple launched it as mac-only software in january 2001. when jobs unveiled the ipod music player later that year, it seamlessly connected with itunes and kicked off apple's strategy of marrying hardware, software and internet services in one premium package. next came the itunes music store, selling songs for 99 cents. today, apple's itunes is the top music retailer in the world. bar none. with more than 10 billion songs sold. for a generation, jobs simply redefined a listening experience.