Live musical performances on television shows this week include:

Live musical performances on television shows this week include:

v Fifth Harmony: Tonight on “Jimmy Kimmel Live” (ABC)

v Kacey Musgraves: Wednesday on “Late Late Show With James Corden” (CBS)

v The Lumineers, Sugar Hill Gang: “Tonight Show Starring Jimmy Fallon” (NBC)

v X Ambassadors: Friday on “Late Late Show With James Corden” (CBS)

v Margo Price: Saturday on “Saturday Night Live” (NBC)

“American Idol” series finale (8 p.m. tonight, Wednesday and Thursday, Fox): The cultural phenomenon that changed the face of television and spawned an array of pop superstars delivers its swan song with a three-night farewell celebration. It starts tonight with a 90-minute retrospective special, “American Idol: American Dream.” The following night, the remaining finalists will battle it out for your votes. Then, on Thursday, it’s the grand finale, during which the Season 15 winner gets crowned and past “Idol” winners, including Kelly Clarkson and Carrie Underwood, return to perform.

“The People v. O.J. Simpson: AMERICAN CRIME STORY” (10 P.M., FOX): The TV event of the winter concludes as the prosecution and the defense make their closing arguments and the verdict comes in. Spoiler alert: He walks.

TV listings, B6