Illianalex found a neat glitch involving sing and the ledge on Corneria. So... I messed around and found a LOT more (my science is great lol). It turns out Sing has some very strange properties when it comes to sweet-spotting the edge. The most well known as of now is the Sing-Cancel variant, Sing-Stepping, whereby sing cancels under the stage and refreshes all of Jigglypuff's jumps. WHAT!? Yeah, anti-gravity ftw. Turns out there's a whole lot more here, and we're only just scratching the surface of what may be a move with fantastic potential.
What Makes Sing Special?
Sing is an extremely complex move. Sing reflects fundamental aspects of the games physics and because of its unique properties it has the most complex and fascinating effects of any move in the game in its interaction with the ledge. In finding new and exciting techniques, I've been posed with that most difficult of questions: why? Why do these things happen? How does Jigglypuff refresh all her jumps without visibly grabbing the edge? How is sing canceling? WTF happened with Illinialex on Corneria?
lol
Sing in many ways acts exactly like a normal jump. It doesn't autosweetspot, the max distance at which you can snap to the edge is if not exactly, pretty much exactly, the same as a normal jump. It doesn't increase the height of your jump. Holding down or to the side will prevent sweetspotting and holding the a-stick in the direction of the ledge will cause you to snap to it. The first interesting thing about sing is that you can't fast fall it. You can't maneuver it at all in fact. And unlike a normal jump, it won't always sweetspot. Most interestingly, when it does snap you to the ledge, sometimes you don't actually grab it. Sometimes sing will snap you to the edge even if you don't jump, at absurd distances.
Clearly there's something going on. My current theory is that Sing's behavior is largely tied to whether it is paired with a jump or not, with an important distinction: there are frames that occur during sing in which it will not sweetspot the edge (current theory). This window is small enough that Sing can sweetspot and snap to the ledge prior to them taking effect, and then cancel the sweetspot during these frames. Maybe this can pass as well, leading to the glitch Alex found. This isn't the reason for the sing-cancel, but it explains some of the even more exotic effects I have witnessed.
Here are the effects I have observed:
1. Is within range and sweetspots normally (TJ on).
2. Is within range and I cancel the sweetspot by holding down or away (you can still sweetspot by letting go)
3. Is out of range and I die.
4. Sweetspots without a jump from extreme range.
5. Cancels and renews all jumps without any apparent motion.
6. Shoots you up past the edge and cancels (I know... what!)
