This works..mostly. It seems that longer title songs stumble a bit as probably a combination of road noise and Assistant's "impatience" , leads it to cutoff, especially if I'm not giving it an internet connection. But by using that exact order of phrasing, it does indeed bypass Play Music and open the song (or an Artists Folder) in Poweramp from the local library. Thank you!
Will Assistant FF, Rew, Pause, Volume or Skip in Poweramp? If so, what phrases work?