Fade a face in and fade a face out

[rcolving]

I can't figure this out.  Instead of my coro face just turning on I want to fade it in to do the singing and then fade it out when there is no singing and then fade it in again when the singing starts again.  How do I do this?

[Gilrock]

I guess you'll have to break it up into multiple Face effects using the fade in and out transitions.