Vince Gill's 4-disc masterwork could surprise for CMA album of the year

When it comes to surprises, the Country Music Association Awards usually do not have much to offer.

But even the staid CMA is good for the occasional twist or two, and this year's best bet might be Vince Gill, who is nominated for album of the year for his ambitious four-disc set, "These Days."

The awards are scheduled for Wednesday night in Nashville; ABC is to broadcast them live.

Gill wrote or co-wrote all the albums' 43 tracks, co-produced them, sang, played guitars and assembled a dream team of guests including Sheryl Crow, Bonnie Raitt, Diana Krall, Alison Krauss and Emmylou Harris.

"These Days" earned Gill …