months of its premiere, The Midnight Special had proven that programming in the later time period was viable, and NBC would expand its programming in the time slot to five days a week with the addition of the talk show Tomorrow, hosted by Tom Snyder, the other four nights. The Midnight Specials original time slot was from 1:00–2:30 a.m. in the Eastern and Pacific time zones (Midnight to 1:30 a.m. Central and Mountain). When The Tonight Show's run time was shortened from ninety to sixty minutes in September 1980, The Midnight Special was moved to 12:30 a.m. (ET/PT)/11:30 p.m. (CT/MT), maintaining its 90-minute run time. In 1978, at the height of the disco craze, the set was changed to resemble a disco nightclub complete with a platform dance floor. Wolfman Jack stood behind an elevated DJ booth. By fall 1979, as the genre's popularity waned, the disco set was replaced. Guest stars Some notable guest stars and hosts included: ABBA AC/DC Aerosmith America Aretha Franklin New Birth Badfinger The Bay City Rollers The Beach Boys The Bee Gees Chuck Berry Blondie David Bowie Bread Brooklyn Dreams James Brown The Cars The Chambers Brothers Jerry Bell Ray Charles Cheap Trick Lou Christie Petula Clark Jim Croce Billy Crystal Bo Diddley The Doobie Brothers Earth, Wind & Fire Electric Light Orchestra Mama Cass Elliot Jose Feliciano Fleetwood Mac Flo & Eddie Peter Frampton Frankie Valli and the Four Seasons Marvin Gaye Genesis Andy Gibb Lesley Gore Gladys Knight & The Pips Golden Earring Goldstar Al Green The Guess Who Heart Janis Ian Wolfman Jack The Jackson 5 Rick James Billy Joel Elton John Journey KC and the Sunshine Band Andy Kaufman B.B. King Kiss Kris Kristofferson Jerry Lee Lewis Gordon Lightfoot Little Feat Loggins & Messina Barry Manilow Steve Martin Eddie Money Van Morrison Randy Newman Olivia Newton-John The New York Dolls Ted Nugent The O'Jays Dolly Parton Prince Richard Pryor Robert Fripp Helen Reddy REO Speedwagon Minnie Riperton Linda Ronstadt Lynn Anderson Rare Earth Roxy Music Diana Ross T. Rex Rufus Todd Rundgren The Shadows of Knight The Spinners The Sylvers Steely Dan Rod Stewart Sugarloaf Donna Summer Tom Petty and the Heartbreakers The Three Degrees Thin Lizzy Ike & Tina Turner Revue Village People War Jennifer Warnes Weather Report Barry White XTC Gary Wright Shirley and Lee - (nb * below) ELO had more appearances than any other band with