Yes, I"ve edited back, because I think if you hear this song many times, you know, how to sing it!
And if there is something to sing, then you have to sing! For every song!
Cause when you select the song you got like 0,4 seconds to start singing and if you dont know the song it´s pretty hard (maybe it would be enough to just F out the first screen). But when you have heard the part once maybe you can sing it in the end? It is your creation and if you want to edit it back to they way it was it is ofcourse ok.