1) “Big Family: The Story of Bluegrass Music,” 9-11 p.m., PBS. In two weeks, PBS will launch “Country Music,” a brilliant Ken Burns film sprawling over eight nights and 16 hours. Consider this a prequel. It’s not as tightly crafted as a Burns film, but it offers a deep and detailed look at a homemade sound that keeps adding layers. “It’s a huge, powerful sound,” says Darroll Anger, a music professor. It brings “explosive creativity,” says Chris Thile (shown here), a musician. And it’s done by genial, downhome folks.
2) “American Housewife” and “Fresh Off the Boat,” 8 and 8:30 p.m., ABC. Both reruns offer teen dating dilemmas. First, Oliver’s dad wants him to be honest with his girlfriend and admit his passion for ballet. Then Eddie dates Trent’s sister, straining his relationship with Trent.
3) “Magnum P.I.,” 9 p.m., CBS. Cyndi Lauper, the singer and gifted songwriter, guests as a lawyer who has shaky ethics. That’s in a rerun that has Magnum trying to help a murder suspect whose son is on TC’s football team.
4) “Keeping Faith” second season, any time, www.acorn.tv. When the first season started, Faith had a picture-book life. She was a lawyer, married to a lawyer whose dad was a lawyer. She had three kids and a gorgeous house in the Welsh countryside. Then her husband disappeared, her daughter was kidnapped and her life crumbled. In the final minutes, after she fixed things, hubby returned. Now we jump ahead 18 months, but flash back to last year’s aftermath. The result is tough, taut and compelling.
5) “Carnival Row,” any time, Amazon Prime. There’s no Tinker Bell sweetness here. Massacred in one land, fairies escape to another, where they’re derided and indentured. In a richly detailed, Dickensian setting, Orlando Bloom plays an honest police detective and Cara Delevigne is a fairy hero. It’s a fairly good (if brutal) piece of a big streaming day. Another fantasy epic is on Netflix, rebooting Jim Henson’s “Dark Crystal.” Then there’s “Keeping Faith” and, on Hallmark Movies Now, “When Hope Calls.”