Many thanks to Betty for the heads up.
The documentary, Dogstar Siriusly Singing Backup, is in the can as of September 23, 2016 according to IMDb. It is in color, has a run time of 82 min and includes footage from the USA and Japan. Keanu Reeves and Rob Mailhouse served as producers while Jess and Wilson Stiner served as directors, cinematographers and editors.The storyline and a screen capture of the filmakers from IMDbPro are below.
Nineties band Dogstar struggles to keep attention on their music despite the world’s obsession with their celebrity bass player, Keanu Reeves.