Should you be a Pandora user, this will be of great interest to you. We're already aware of the team getting cold feet last year when requests were in for a Windows Phone client, possibly due to no background audio. Now that Mango is here, some were hoping for any sign of progress with an app. To lighten things up slightly, we have an unofficial solution surfacing, which is being developed by Janabi Mustafa (see above demo).
Metro Radio will allow users to login with Pandora account credentials and display radio stations on the account with background streaming, album art, and liking options available. The app is set to be released next week, which will provide Windows Phone users with Pandora access.
Thanks Mustafa for the tip!