The Baytown Christian rock band Leeland postponed a local performance last month. But the unassuming group of mostly home-schooled preacher's kids had a good excuse. They had to go to the Grammys.

I have to admit, listening to songs like “Sound of Melodies” in recent months made me wonder, What’s Leeland been up to? What the generation-next worship band from Texas has been up to is nothing less ...