We were supplied with a single stem vocal and created the mults from it and the harmonies after with pitch corrected the original sent. We sent back 3 versions from which the artist and producer selected all the corrections, enhancements and harmonies we suggested
Voice doubling is an age old "trick" of many masters. The best way to do it is to sing the part again "on top" of the original. The second best way to do it is to double your original and insert very small timing, pitch and formant differences. We will analyze your stem(s) and we may ask you to double the vocals a couple times and send those too. And don't worry about timing differences - we can deal with those too.
Not autotune! Analysis of your vocal stem(s) with consideration given to the relationship to your music stems is paramount. Sometimes it's better to be slightly sharp or flat! Sometimes that's where the "edge" is. Obvious pitch mistakes are corrected of course. Bending notes is also a specialty. Augmenting slides and changing slide timing is another possible correction/enhancement.
We all know it's important to follow the beat but seemingly subtle differences can make all the difference. We sometimes "push" the timing for emphasis. It's pretty amazing what we can do here.
Lot's of voices (especially untrained ones) have vibrato issues that make them sound "off". Flattening uncontrolled and uneven modulations will make for a solid more consistent vocal tone. You will hear the change, but it isn't fake.
It's true that we can create harmonies from your original lead stem(s). Not all songs benefit from harmonies but a surprising number do. We will suggest and you can decide.