Evolver posted this a while back. It’s about a chart from Flurry about the increase in time spent with mobile apps in different categories.
The music apps category is the second fastest growing. Now this is no big surprise to many of us, but it is a bit of a shift from Flurry. I spoke to them back in March about music apps and they thought that the data was a little skewed on music apps. Seems like they figured it out though.