Music streaming service Pandora returns to its roots

Westergren, a former musician, had spearheaded Pandora's Music Genome Project, a pioneering music categorization system that uses hundreds of characteristics to describe songs and a complex mathematical algorithm to organize them.     Pandora aims to use that taxonomy, as well as data about users' listening habits, to improve its music recommendation and discovery services. While virtually all streaming services make heavy use of data, many academics consider Pandora's datase