Through the magic of singular value decomposition, Brian Whitman's Eigenradio brings you the maximally-informative combination of the principal components underlying the music playing on dozens of radio stations right now. Sometimes some actual music breaks through. The cat doesn't like it. [Via J-Walk]
Update, 13 August: John Burke points me to a conceptually related work, The People's Choice Music by Dave Soldier and those brilliant polymaths Komar and Melamid (official site; cheap commercial exploitation). This CD contains two tracks, their contents determined by a rigorous polling procedure: the most wanted song ("a musical work that will be unavoidably and uncontrollably 'liked' by 72 plus or minus 12% of listeners") and the most unwanted song ("fewer than 200 individuals of the world’s total population will enjoy this"). Since fewer than 200 individuals of the world's total population enjoy this blog, I think you owe it to science to help determine if those two sets are one and the same.