The test spot I use to test this (as it's most affected by it), the 4 beamos to SoT room in MQ spirit, still has Link frozen in place in a one-point until a few seconds after the melody ends, while usually link gets control back a few seconds before.

Additionally, playing SoT for the windmill/Dampe race blocks with all skips on seems to trigger windmill man giving the player song of storms even though the player is nowhere near him. strangly this only happens if you are on the dampe race side of the blocks.

Thanks for testing!

1. Obj_Warp2block cutscene eliminated 🎯

2. I tested in decomp with removed timeblock cutscene and could also trigger the SoS learning, but only when entering through Windmill (but not always, so not clear if connection).
   I don't have logging set up for Ocarina interactions in decomp, but I suspect that En_Fu doesn't have a range for reacting to if player has an Ocarina-related playerstate or to the play->msgCtx.ocarinaMode, and not having the cutscene makes En_Fu susceptible to reacting to it.
   But, isn't this long-distance learning used in some trick? I don't want to ruin it by putting a distance check in En_Fu that could be too short.
   Should the skip be disabled in Windmill for now?

3. While testing above on decomp I did get a floating point exception crash in a vector math function with SoT, which could be related to calling Play_InitCameraDataUsingPlayer (func_800C0808). So I removed it for now, it's only aesthetics and orientation, but I find it's disorienting, so if I learn more about cameras I'll revisit it.

2. ...

Removing the skip on the windmill block is fine for now, leave a comment about why for documentation, and we can potentially have the glitch experts look at what's going on later to see if there's a better answer.

During testing of location restriction now I did find out that the cutscene skip is actually completely irrelevant for the Song of Storms learning, it is purely based on whether EnFu is spawned or not.
This is decomp without any cutscene or Ocarina stuff modified, just that EnFu hasn't been despawned on room change by bypassing En_Holl planes: https://www.youtube.com/watch?v=WJoFZba21Ys (and from the beginning showing doesn't work if EnFu not spawned + works with SoS, https://www.youtube.com/watch?v=7WTFiNXElQM)
So windmill/grave timeblocks can be cutscene skipped.