Hearing all tracks in scrub and shuttle

Seems like a dumb question, but I can't find a thing about it in the documentation. I'm running Pro Tools 11 on a Mac Pro with a Artist Transport. I'd like to be able to scrub and shuttle while hearing all tracks. You know, the whole mix. If click in a track to select it and shift click another I can make two play. But if I select too many tracks nothing plays. I've tried selecting multiple tracks, selecting the Master track, and nothing works.



Please tell me there's a way to do this. Preferably that doesn't involve shift clicking into 60+ tracks.



Thanks.