What do these artists all have in common:

Chaka Khan, Minnie Riperton, Santana, Janis Joplin, The Doors, Fleetwood Mac, Jefferson Airplane, Jethro Tull, Buddy Miles, The Rolling Stones, Muddy Waters, Earth Wind and Fire, George Clinton & P Funk, Donnie Hathaway, Curtis Mayfield, The Dells, Little Richard, Chuck Berry, Dolly Parton, Kenny Rogers, Teddy Pendergrass, Gloria Gaynor, The Temptations, Marvin Gaye, The Supremes, Berry Gordy Jr., Gene Chandler, Bo Diddley, The Staple Singers, Led Zepplin, Canned Heat, The 4 Tops, Lou Rawls, Denise Williams, Wilson Pickett, Jerry Butler, Jerry Cooke, Tommy Hunt, Edwin Starr, Lloyd Price, Eddie Holman, Buddy Rich, The Moody Blues, Bootsy Collins, Stevie Wonder, Chicago, The Jackson 5, Sly & The Family Stone, Sam and Dave, B.B.King, The Steve Miller Band, Jackie Wilson, Pig Meat Markcum, J.J. Barnes, Herbie Mann, Lieber & Stroller, Mary J. Blyth, Puff Daddy, 50 cent, EPMD, Parliament, Rotary Connection, Ramsey Lewis, Iggy Pop, Albert King, The Beasty Boys and many, many others?

They have all either appeared in concert, worked in the recording studio, or have sampled or recorded the songs of... Sidney Barnes!