There are more than one artist that go by the of Mr. Blue. Three are mentioned below. 1. Mr. Blue is another alias of Bonobo. Simon Green made an exclusive track called "Sacramento" on the compilation album "Hidden People" under this nickname. 2. Another Mr. Blue is a Tanzanian singer of Bongoflava, Swahili hiphop. 3. A great Blues / Bluesrock Band that has an album called 'Down The Road'.