Microsoft's weird ad for Songsmith: You sing and it does something. (To be a 100% honest I am in public and haven't had a chance to actually listen to the ad... which is probably helpful considering it is music software.) Not sure why they used a MacBookPro (and then tried to disguise it with flower stickers... "Bob, one flower sticker over the apple looks silly. Slap some more one there!").
Anywhozits, this could be a boon to musical improvisers or people attempting to write a music who have no musical talent... like myself.