In the summer designated as the 50th anniversary of hip-hop, the documentary “Mixtape” (Paramount+, streaming) concentrates on a new way the music got around, being sold out of the trunks of artists. Interviewees include 2 Chainz, Big Boi, Kid Capri, KRS-One, A$AP Rocky, Fat Joe and Lil Wayne, pictured above.
The sports documentary series “Untold” (Netflix, streaming) returns for a third season. The first of its four episodes looks at internet boxer (and former Disney Channel star) Jake Paul.
“Southern Storytellers” (PBS, 9 p.m.) concludes with some input from songwriters Justin Moore and Theo Nguyen and Tarriona “Tank” Ball as well as poet Natasha Trethewey and author Jesmyn Ward.
A winner is named on the first season finale of “Hot Wheels: Ultimate Challenge” (NBC, 10 p.m.), another Mattel property getting a pop culture push this summer.
“Iconic America: Our Symbols and Stories with David Rubenstein” (PBS, 10 p.m., check local listings) winds up its inaugural season with a look at the Golden Gate Bridge.
Raylan tangles with the Albanian mob on “Justified: City Primeval” (FX, 10 p.m.).
The good news: Hallmark’s Christmas in July promotion is over; the bad news: “A Valentine’s Match” (Hallmark, 8 p.m.).