Who makes Stage Tour
RedOctane Games is a new studio in Livermore, California, owned by Fellowship Entertainment (formerly Embracer Group). It is led by Simon Ebejer, a production director on several Guitar Hero games at Neversoft and later head of Vicarious Visions, with original RedOctane founders Kai and Charles Huang as advisers. Third Kind Games, whose developers worked on DJ Hero and Guitar Hero Live, and Eidos-Montréal support development.
So Stage Tour is not a Guitar Hero game: Activision still owns that name. It is a new game by people who made Guitar Hero, and it plays the same way.