Bulk artist search / import

It would be cool to be able to pass in a list of artists or song URLs and look them all up on Unstream at once. This could be a great way of supporting every artist in a playlist or quickly setting up a saved artists list.

I could see this integrating with things like a Listenbrainz/Last.fm listening history, Spotify playlists, an rss feed of new releases, and more.