How to Multi-Track a Vocal

The head is in a constant space. So you can add reverb, an ambience, essentially. And I've been doing that a lot recently with singers where I've been getting them to multi-track a vocal. They'll sing the lead and then I'll get them to sing the lead again. It's kind of like the weirdest way of double-tracking. That microphone is picking up... Yeah. It can never be solo, that microphone. Right? "It's strictly in effect, but it's like all of a sudden the spaciousness that's added is beyond"