The document analyzes the top songs downloaded on iTunes and top viewed videos on YouTube, finding:
1) The #1 song on iTunes is also #1 on YouTube but not in the top 10 of radio play.
2) Songs rank higher on iTunes than YouTube views, but parity increases with longer video presence and more views on YouTube.
3) There is little correlation between success on iTunes, YouTube, and radio, suggesting radio appeals more to older demographics.