There are several artists using this name. 1) Sulo is a very popular singer from Estonia. He has been recognized as one of the most innovative artists in the business.
2) Sulo is a member of Australian Hip Hop group The Herd.
3) Sulo is the singer in a great swedish rock band called Diamond Dogs. He has also released two solo albums; "Just another guy tryin' and "Rough diamonds". Both great by the way.