What do you get when five Mormons with a deep love of music discover the transformative power of YouTube?
That's the back story of The Piano Guys, a group of Utah dads who've just gone from pop-music Web sensations to the newest artists on the Sony Masterworks label.
"This is kind of freaky — miraculous, really," says pianist Jon Schmidt, 46, who anchors the group on keyboards. Another plays cello, while the remaining three work on video conceptualization and production. "People like instrumental music. Lyrics can be limiting and confining."