|This is an April Fools' Day version of Rewind Sound () (block). Please don't take it seriously. You can find the original here.|
The Rewind Sound () block was a block meant to reverse what sound was selected, but it deleted all the sounds of a project and sometimes blew up projects instead. The Scratch Team burned it with fire after only three months. It's still available in Scratch 0.0.
The Scratch Cat did not like this block.[this info might be a giant lie and confuse you and everybody else in the multiverse]