"The album is based on a concept called 'synesthesia', where senses cross so that a sound or a tone correlates to, say, a colour or a taste. For example what does purple taste like? What does a thud look like? It could be hearing a musical note or a melody and seeing a flashback from the youthful romance of your adolescence. "Every thought makes a sensory impression," Pharrell says, "but sometimes the wires are a little crossed. When you hear a sound, instead of just your brain receiving electric impulses and then interpreting them, something happens and it invokes other things, a feeling, a memory, an emotion. That's how we make music."

i thought that whole thing is pretty neat.... anyone been seeing sounds?