A while back I posted an interesting glitch I had found, however I explained it pretty poorly. Basically, you timestop (bottle/shield method) in front of a gossip stone, and it will put you in a state where you can play the ocarina and walk around at the same time. So you can play songs while you're moving, and strange things will happen. Here's a list of possible effects I've gathered:
-playing SoT in this state and selecting yes will save the game without taking you back in time, much like SoT storage
-SoDT takes you forward in time without playing a cutscene. You can select yes while entering a loading zone to reset your current day.
-ISoT slows time without playing a cutscene.
-playing SoS will cause the menu to pop up, but just like SoS storage, trying to warp does nothing.
If the menu comes up while you're z-targeting, the game will softlock.
-entering a loading zone while any of these songs are playing will cause them to get stored. (useful? probably not, or in very rare occasions.)
-epona's song still calls epona
-elegy of emptiness does nothing
-once you activate the glitch, you can use c-up to cancel the locked timestop camera and allow you to use items while playing the ocarina. You can even switch masks.
-if when a song finishes you're in actor range of a cutscene triggered by that song, the cutscene will play. For example, you can timestop at the gossip stone at the 2nd part of great bay, swim over to zora cape, and play NWBN. If you're anywhere near the cape when the song finishes and in zora form, the turtle cs will start
-taking out the real ocarina cancels this
-bringing up a text box while a song is playing cancels the playback, but the song's text box will come up as soon as you skip the text
One of the most interesting aspects of this glitch is that even though you're technically in ocarina mode, all enemies, npcs, and everything are still moving even though they should be frozen. Could this be linked to the songs behaving strangely? I don't see very many uses for this, but it can be triggered wherever there is a gossip stone, and there still might be more effects that I overlooked. Sorry for the long post.