The number of artists in Pandora's catalog is very small relative to all other mainstream services (because of the cost burden of onboarding artists into the Mu

The number of artists in Pandora's catalog is very small relative to all other mainstream services (because of the cost burden of onboarding artists into the Music Genome Project, a manual process). So, put an unknown artist that sounds like Coldplay into rotation and every user who starts a Coldplay channel is going to get them a bunch of times. Do an unknown band that sounds like Guns N Roses, same thing.