Pandora setzt mit seinem händischen Ansatz der Katalogisierung von Musik auf "Weniger aber besser", während viele andere Services Metadaten algorithmisch erfassen lassen:
On the surface, it appears that Pandora, despite its head start of at least a decade on most of its competitors, is facing an uphill battle. It’s not just the number of services that are potentially coming online but also the number of songs and the amount of data those services are offering up to consumers. The Echo Nest, which powers personalization for Spotify (among others), boasts data on more than 35 million songs (which is why Spotify’s library is able to hold more than 20 million songs). Upstart Senzari says its new MusicGraph platform contains around 20 million songs. Gracenote has data on more than 130 million.
Pandora, by contrast, has “more than 1 million” songs in its library.