As far as the original chords, harmonies, rhythms, and melodies go those would prolly be the most changed as its like a church-y sounding songs with an organ as the main instrument, but I wanna make it rock. I'm going to keep it dark, (If you don't know Sweeney Todd like to kill people after cutting their hair and the song lets you know that) as far as the lyrics go, I'm no singer so I was either considering keeping them intact or removing them completely and trying to have someone else probably my cuz replace them. the song has this loud like industrial whistle in it I definitely wanted to incorporate it into the song in some way. I was consider adding a Solo, but I only know a Am Pentatonic scale and I don't know how good of a soloer I am so I'm still questioning that.
I don't get what you mean with #2, like instruments used? If so, Guitar(Me), Drums, usual rock instruments.
I'm gonna have the Remix recorded with the lyrics, then create and memorize the Guitar part and play that over the Remix during my performance.
It will definitely require software, I have a Demo of Sony Acid Pro, Audacity, and I used to have Fruity Loops I'm going to see if I can get that back.
If I can't salvage the lyrics I'll need a mic, but I should be able to take care of that hopefully.
I need to do everything soon cause I present sometime in the next 2 weeks; I was trying to use Acid, but it just confused me.