That's the reasoning behind the choir's newest CD release, called "Heavensong," which contains a variety of classical, spiritual and original compositions, including a collaboration between the choir and Grammy Award-winning musician, composer and producer David Foster.
"The original conception was to find music of contemplation and light," Wilberg says.
There seems to be a particular need for that kind of music in today's sometimes-harsh, sometimes-depressing world, he says. And music can be a powerful ally amid the turmoil.
But choosing the selections for the CD was an interesting experience, he says.
"I had a huge pile of music that I thought might fit. But some that I thought sure would be on it didn't make it, and some that I thought would probably not make it, did."