Wiimote Music is a wiki page on WiiLi.org that showcases the use of Wii remote controls for playing and mashup music. In those showcased YouTube videos, Wii-motes sometimes are used a replacement for traditional music instructions (e.g., a guitar), and other times are used as input devices for mixing and mashup tunes.
Josh Hosler has a website that allows you to lookup the #1 song in the U.S.A. on any date since 1940.
#1 Song on
Hum… I wonder if our parents remember listening to those songs when we were born. 
The Music Geonome Project attempts to create the world largest metadatabase of music that was made in the past sixty years. The basic idea is to get a group of musicologists (music ontologist I guess) to analyze each song using 400 distinct musical characteristcs.
As a result of this project, it comes to the creation of Pandora — a service that help you to discover new music you’ll love.
For almost six years now, we have been hard at work on the Music Genome Project. It’s the most comprehensive analysis of music ever undertaken. Together our team of thirty musician-analysts have been listening to music, one song at a time, studying and collecting literally hundreds of musical details on every song. It takes 20-30 minutes per song to capture all of the little details that give each recording its magical sound - melody, harmony, instrumentation, rhythm, vocals, lyrics … and more - close to 400 attributes! We continue this work every day to keep up with the incredible flow of great new music coming from studios, stadiums and garages around the country.
If this project becomes successful, it will prove the following:
