Look back at Saturday Night Lives biggest music milestones and moments as it celebrates 50th anniversary

For 50 years, “Saturday Night Live” has kept us rocking as well as roaring.And the musical legacy of the sketch-comedy juggernaut will be celebrated Friday night with “SNL50: The Homecoming Concert,” which will be streaming live from New York’s Radio City Music Hall on Peacock.An all-star lineup of performers includes Lady Gaga, Cher, Ms.Lauryn Hill, Dave Grohl, Miley Cyrus, Jack White, Eddie Vedder, Chris Martin, Bad Bunny, Post Malone, Jelly Roll, David Byrne and Arcade Fire.Before the historic concert begins at 8 p.m.

ET, we look back on some major music milestones and moments in “SNL” history.—There were not one but two musical guests when “SNL” debuted on Oct.11, 1975: funk-soul legend Billy Preston and folk goddess Janis Ian.—Dave Grohl has racked up the most appearances as musical guest with a sweet 16: nine times with Foo Fighters, twice with Nirvana, once with Them Crooked Vultures, and once as drummer for Tom Petty and the Heartbreakers.—Justin Timberlake is the only musician join the Five-Timers Club as host, earning his jacket in 2013.

Three of those times he pulled double duty as musical guest, while on another occasion he performed one song with musical guest Ciara.—Folk songbird Phoebe Snow was the first musical guest to appear multiple times, performing on two episodes of the first season.—In a sketch on April 24, 1976 “SNL” creator offered The Beatles $3000 to reunite and perform on the show.John Lennon and Paul McCartney almost took him up on his offer and made a surprise appearance.—Paul Simon was the first to serve as both host and musical guest in 1975, and it’s a juggling act that he he pulled off three other times, most recently in 1987.–Britney Spears, Drake, Jennifer Lopez, Miley Cyrus and Garth Brooks have twice doubled up as host and musical guest of “SNL.” Drake was the last to do it in 2016.—When Debbie Harry was host and musical guest on Feb.

14, 1981, she brought in the Bronx hip-hop group...