Motivation to write music
He read a short story and was motivated to write a soundtrack to express what he was feeling.
To take it a step further, he posted his creation on soundcloud and allowed others to contribute lyrics and melodies. These were not A list celebrity singers, but pure musically inclined artists that created something for the sake of creating.
DeadMau5 was blown away when he heard a submission which comprised of 2 verses.
The guy read the description of what the track was about. He read the story to get inspiration and then wrote some melody and lyrics. Pure music creativity. No influence of perception, money, ego, motive. Just pure creativity.
Here's the entire article: http://deadmau5.tumblr.com/post/19570452553/collaborations-songwritting-and-the-like