Another music collaboration site on the web

In Manifold Recording, recording studio by Michael Tiemann

At the beginning of this year I blogged about, and reports from many indicate that this Austin-based startup is delivering as promised, which is great.  I just learned of another site that appears to offer similar services with an international flavour:  I look forward to seeing how these sites enable/encourage greater musical collaboration and also whether musicians who meet through these sites ultimately find a reason to work together in a large tracking room.