A new documentary defines Elvis Presley as a musician first, superstar second. And the clever romantic drama “Right Now, Wrong Then” arrives on Mubi.

What’s on TV

ELVIS PRESLEY: THE SEARCHER (2018) 8 p.m. on HBO; also on HBO streaming platforms. Documenting Elvis Presley’s life in a new light is no small feat. But the director Thom Zimny started working on this two-part portrait with one goal in mind: The King’s music comes first. “The Searcher” is a deeply personal look at Presley’s creative process and musical influences, beginning with his childhood in Mississippi to his final recording sessions in 1976. Interviewees like Tom Petty, Bruce Springsteen and Priscilla Presley recount how the rock legend’s music was often overshadowed by his image, emphasizing that he was most himself while creating and performing. Fans will surely appreciate the featured tracks; Presley’s archivist generously offered 6,000 recordings to choose from.

LITTLEST PET SHOP: A WORLD OF OUR OWN 12 p.m. on Discovery Family. This spinoff series shifts focus from the human protagonist in the original “Littlest Pet Shop” to six pet friends in two back-to-back premiere episodes. A magical portal transports pets to a utopia equipped with ski slopes, animal-friendly apartments and a beauty salon where cats offer back massages. The series opens as the Boston terrier Roxie, house sitting for a pop star, is confronted by a group of snobs who may be using her to throw a house party.