A few quotes from DJ Robbie Wilde's HP commercial, The Sound of Touch:
"Just a feeling of the bass, that's how we dance. That's how we know what's going on, and we enjoy it!"
"So the way that technology helps me out is the wave forms are colored. Red is a kick, its a bass, and green is a vocal, and blue is a snare. That's how I see what's being played. I see the song."