You gotta have a dream. If you don't have a dream, how you gonna make a dream come true?
Once you really get into a song, other than just listening to it, it forces you to go 'oh, they did this. I never would have thought of doing that,' when you deconstruct it. It's something you really can't do sometimes when you're just listening to a song. You have to really get into it.
An entrepreneur must pitch a potential investor for what the company is worth as well as sell the dream on how much of a profit can be made.