"I'm singing what I want to sing based on the emotion of what that day feels like. That's what comes out of my mouth and guitar. That impacts people. They know anything can happen"

In this quote, John Mayer is expressing his technique to music and efficiency. He discusses that he sings and plays based upon the feelings he is feeling on a particular day. This implies that his music is not prepared or computed, but rather a raw and genuine expression of his existing mindset. He believes that this genuine technique to music has an effective effect on people, as they can pick up the genuineness and unpredictability in his efficiencies. Mayer's words suggest that his music is not practically entertainment, however likewise about getting in touch with his audience on a deeper level.