I kinda found a work around. use a 3rd party controller with auto fire and put a rubber band around the X button. works but software hack could be more elegant :/
You are about to leave Rhythm Gaming World and access the external songs DB. While no song or file sold for commercially available videogames is hosted there and only fan generated content is allowed, Rhythm Gaming World has no direct control over the database and no files are hosted here. Alright, we had to made you aware of this, now you can visit the database!