Are the backing tracks legal? Andrew August 13, 2017 03:16 Updated Follow 100%. We have a team that works hard to navigate the legalities of adding songs to our catalogue. Related articles Why can't I download a songs backing track or WurrlyGram? What devices can I use Wurrly on? How do I turn off the video feature and record with audio only? How do I become a Featured Artist? Song Requests Comments 0 comments Please sign in to leave a comment.