What you need:
- A source
- A base
Open Vegas Pro, drag the source, and the base into your timeline.
Go to File, Properties, and Ruler, and set the ruler time format, (BPM) to 140.000. Also, mainly if you're in Sony Vegas Pro 11, you'll need to disable the "Quantize to Frames" feature. All of this will help you get the timing right.
Follow this chorus pattern: 11_11_111_1_1_11222_2_222_222_2
Choose a quote, for example: https://www.youtube.com/watch?v=LyM1UGD8sqM
Make each notes 3 frames long, and make each skip (as the "_") 3 frames long.
If it's this symbol, "*," then that means you have to double the length of the clip.
The "OMG TEH EPICNESS" article is shown here..
The "Freestyle" article is shown here.
The "Pitch" article is shown here.