From the NME comes this interesting fact:
Pop albums outsold rock albums for the first time in seven years in 2011, according to new figures released January 16.
According to official figures released by the Official Charts Company, seven of the top 10 selling albums of 2011 were classified as pop albums. With big sales from the likes of Adele and Jessie J, this gave pop albums a 33.6% share of album sales overall.
The sale of albums classified as rock albums fell from 31.2% to 29.4%, their lowest figures since 2003. This was despite the release of big-selling albums from Coldplay and Noel Gallagher’s High Flying Birds. The sale of pop singles was also up, outselling rock singles by two to one across the year.