This improv took less than an hour to put together, and you can tell by its lack of production. The lyrics are just ad-libbed singing to another page's list of emoticons:

http://www.computeruser.com/resources/dictionary/emoticons.html

Unfortunately, I didn't make it through the whole list, but it got pretty far. Also, since some of the vocals are layered, those of you reading the lyrics will notice some parts stop and start at odd parts of the list.