Spotify Ltd is on a quest to win artists’ favour, and it’s starting with wooing Katy Perry

[ad_1] Fans of pop star Katy Perry woke up Friday to an e-mail on their smartphones: Her new single, “Chained to the Rhythm,” is available for streaming. They got another reminder when they logged on to Facebook, where Perry is liked by more than 70 million people. As if that weren’t enough, Los Angeles and…