MasterEto, as always, has some great bass guitar resources to share. This time around, he's shared his versions of two songs from the finale: What My Cutie Mark is Telling Me and A True, True Friend.
You can watch MasterEto play What My Cutie Mark is Telling me in the embedded video, and find the bass tab here. Then listen to A True, True Friend and check out the bass tab for that song.
Thanks, Master Eto!