Changing Pitch

I want to change and lower my pitch of all the tracks that were recorded and then sing Vocals(that I could not reach some of the high notes),then bring back the pitch to its original state therefore bringing my Vocal pitch up .It was possible with Analog tape and older software Why now it’s so hard. Only one knob should do it without tons of procedures…Please someone help me …I have Cubase 7

Aloha g,

Found on page 165 in the manual:
You can also transpose the whole project using the transpose track. This is useful if your singer does not reach a certain pitch, for example. You could then transpose the whole project by -2 semitones, for example.

HTH (hope this helps)