We sell tabs as part of our Pitch Perfect program (http://www.soundslice.com/pitch-perfect/ http://www.soundslice.com/pitch-perfect/), and for that we deal dire

We sell tabs as part of our Pitch Perfect program (http://www.soundslice.com/pitch-perfect/ http://www.soundslice.com/pitch-perfect/), and for that we deal directly with the artist to clear copyrights. The YouTube (free) part of the site is meant to be a loss leader / tech demo for Pitch Perfect and our technology licensing. We haven't run into any licensing issues. It'll be interesting to see what happens over time, as I don't believe in putting ads on the site, and I'd like to keep a free version and a pay-for version.