From Fast Company.
The latest spot for Old Spice starts off in typically insane fashion. Perpetually amped spokesman Terry Crews is seated, stripped down to tiny red shorts, with EKG sensor pads all over his body. He’s completely surrounded by musical instruments and other odd equipment that looks like it up and walked off the set of Peewee’s Playhouse. In other words, we are in familiar territory. It’s only once the ad ends that the proceedings truly venture off the beaten path.
In “Muscle Music,” those sensors on Crews’ body are rigged to corresponding musical instruments. Each time the massive spokesman flexes his muscles, a note of some kind sounds--most memorably, perhaps, a “flame sax” at one point. After the ad is over, though, comes the ultimate Easter Egg: Users can actually “play” the strange orchestra themselves.
When the time runs out at the bottom of the Vimeo player, a record button appears. Users are then encouraged not-so-politely by a suspended animation version of Terry Crews to explore the musical space by tapping keys: ""Hey, play the music or get out."