Doubles are one of the most effective ways to fill out a mix. They give you a natural chorus effect as well as more panning options. But what can you do if you never actually recorded any doubles? Simply copying a part won’t do it. We need something else.
A Little Trickeration
What makes a double sound so good, is the slight variance in performance. You never play it exactly the same way twice. So in order to recreate this in your DAW you need to fudge some parts around as if you they were a second performance. It’s all an illusion.