It's been 17 years since Alison Krauss last released a solo album, not that she's been idle.
Her 2007 combination Raisin' Sand with Robert Plant, for example, broke new ground.
With 27 Grammy awards on her shelves, Krauss has never relinquished her crown from the Country Music field which she mostly calls home.
For Illinois born and bred Krauss, naming her new album after Chicago was a no-brainer, and on the strength of the music within it there's no way anyone else will be wrestling her role as the Queen of Country anytime soon.
Hooked up with legendary producer Buddy Cannon, she set out to cast her own long shadow on a clutch of country classics, recorded with a who's-who line-up of musicians.