So, what do all of these have in common ?

AC/DC, Alice in Chains, Allman Brothers Band, APM, Asia, Bach, Bachman-Turner Overdrive, Bad Company, Barry White, Big Bill Broonzy/Little Walter, Billy Squier, Black Sabbath, Black Toast Music, Blind Faith, Blue Oyster Cult, Bob Dylan, Bob Seger System, Bon Jovi, Booker T and the MG’s, Boston, Brian Tichy, Brimstone Howl, Captain & Tennille, Cheap Trick, Chris De Burgh, Classic, Creedence Clearwater Revival, Daniel May, Def Leppard, Fall Out Boy, Filter, Focus, Foreigner, Frank Sinatra, Free, Goodnight City, Grand Funk Railroad, Herb Alpert, Hound Dog Taylor & The HouseBreakers, Huey Lewis and the News, Iron Butterfly, James Gang, Jamie Dunlap, Jason Manns, Jefferson Airplane, Joe Walsh, Joey Ramone, Johnny Cash, Journey, Junk Food, Kansas, Kenny Smith & The Loveliters, Kid Gloves Music, Kip Winger, Les Paul & Mary Ford, Leslie Gore, Little Charlie and the Nightcats, Living Daylights, Low Five, Lynyrd Skynyrd, Martyn Laight, Mother Superior, Muse, Nazareth, Nichion Sounds Library, Night, Nine Days, Ozzy Osbourne, Paul Richards, Poison, Queensryche, Quiet Riot, Ratt, REO Speedwagon, Robert Johnson, Rosemary Clooney, Rush, Sam and Dean, Sasquatch, Scorpions, Screamin’ Jay Hawkins, Screaming Trees, Son House, Soundgarden, Spinal Tap, Split Habit, Steve Carlson, Steve Ray Vaughan, Styx, Survivor, Ted Nuggent, The Allman Brothers Band, The Animals, The Chambers Brothers, The Doobie Brothers, The Doors, The Eagles of Death Metal, The Mamas and the Papas, The Republic Tigers, The Rolling Stones, The Stooges, Three Dog Night, Tito and Tarantula, Triumph, UFO, Vue, and White Zombie

Consider this an unrelated "What’s It"