Underground, the upcoming runaway slave thriller series from WGN America, has a great soundtrack. The show pays more attention to crafting its score than the average cable actioner.

That's largely due to executive producer John Legend. Legend, an Academy Award-winning singer-songwriter, has deep ties to the music industry, and through him the show was able to secure music by big-name artists like Kanye West, whose song "Black Skinhead" soundtracks the first scene of the pilot.

It's not all Legend's doing, however. There's a dedicated team working on the music of Underground. Meet them in this behind-the-scenes featurette, which includes interviews with composer (and R&B star) Raphael Saadiq and creators John Pokaski and Misha Green, and glimpses of the creative recording process.

Underground tells slaves' stories, but it's no historical snooze

"We wanted to make the show kind of a smashup of contemporary music and old music," music supervisor Jonathan Christiansen says.

"We definitely wanted to use that to show that 1857 isn't so different than 2015," Green elaborates. "We get a lot of old songs with new updates."

Watch the featurette right here.

Underground premieres Tuesday, March 9 at 10/9c on WGN America.