How Do You Change Tempo Where It Actually Slows Music Down Or Speeds Music Up, Cubase SE for MAC Options

[Junspicable]

Wut it Doo, Fellow Musikineers

I am Running Cubase SE on my G4 Mac and am still learning the program but one thing that I havent been able to do is actually slow the Tempo of a (Track/Song) I have been able to change the speed of the timing but what I want is to actually affect voice or Music Slow it down (Screw it up) -Southern Style. Is this even possible with Cubase SE or Do I Need Another Program I would appreciate any help anyone can give me.


Thanks,
Junspica