The cast of “Mamma Mia” popped into the final dress rehearsal of the 5th grade musical “Jukebox Time Machine” to wish them a happening opening night and sing a little number with them. It doesn’t always happen that your shows share the same crowd favorite number. “Jukebox Time Machine” opens tomorrow night at 7:00 PM at the RHS Cafetorium! You can catch it again on Thursday at 7:00 PM. | Robinson CUSD 2 Music & Theater