Here are some noteworthy discoveries:
1. The top-selling song of 2003 on iTunes was OutKast‘s “Hey Ya!”, which is still a great song.
2. The top-selling album of 2003 was Jack Johnson‘s On and On, which says a lot about how far we’ve come, doesn’t it? (The second was Sting‘s Sacred Love.)
3. The top-selling song of 2006 on iTunes was Daniel Powter‘s “Bad Day,” which is still super annoying.
4. In 2007, Sara Bareilles and Colbie Caillat both had their songs featured as Single of the Week and then became pretty big. More importantly, in 2008, the same thing happened to Adele. In 2009, the same thing happened to Owl City. (Note that there is no implied quality trajectory here.)
5. Carly Rae Jepsen‘s “Call Me Maybe” was the top-selling song of 2012, and also the best song of that year, which is great that that finally happened. (Pretty sure it was the first time — no shade, 2010′s “Party Rock Anthem.”)
The whole timeline is up at iTunes.com/decade and it’s worth poking around if you’re into that sort of pop nostalgia, and really, who isn’t?