. >> watching what could have been the legendary musicproducer, mind, he worked with mar lia, pink, usher, weaver, whitney, but for him gaga is the one that got away. >> who would have thought that lady gaga would beco gaga. >> he told her she should change mauz sick, but after hearing her demo tape, he passed. >> then it was gaga's world. and i shrunk about this big. >> today he's the ceo of epic records and he got there by fiunknown singers and turning them into pop icon. he signed 14-year-old ju bieber to his record label, l.a. orchestrated mara's come back. >> l.a. told me you'll be a pop star all you have change is >> and r does take some of the blame for this. >> crack ask whack. >> i failedwhitney, honestly. because it was something that helped to arrange. >> in his new book, seems to me, discusses his role in whitney houston's now infamous 2002 interview with diane sawyer. >> let's get that straight, okay? >> sometimes i try to protect people and that was ne of the things i female like i failed at. >> and l.a. is also the guy who discovered megan trenor, she's up for a best n albu