Mariah Carey , Stevie Wonder , Lionel Richie , Jennifer Hudson , Usher , Jermaine Jackson , and Shaheen Jafargholi sang Vocalizations Jackson 's songs , and John Mayer played guitar .

Artists such as Whitney Houston , Mariah Carey , Rod Stewart , Charles Aznavour , Stevie Wonder , Alicia Keys , Shakira , Justin Timberlake , Jennifer Lopez , Enrique Iglesias , Christina Aguilera , Rihanna , Ricky Martin , Pharrell Williams , Iggy Azalea , Wiz Khalifa , Pitbull , Kanye West , Scorpions , La Fouine , Maître Gims , Damso , Booba , French Montana , Usher , Avicii , Akon , David Guetta , DJ Snake , Hardwell , Placebo , The Chainsmokers , Maroon 5 , The Jacksons , Sugababes , Chic , Evanescence , Chris Brown , Luis Fonsi , Bruno Mars , Nick Jonas , Stromae , Jason Derulo , Juanes , Lenny Kravitz , The Weeknd , Kylie Minogue , Demi Lovato , Ellie Goulding , Sting , Julio Iglesias , Ennio Morricone , Robert Plant , Cat Stevens , B.B .

Among the highlights of past festivals were : Luther Allison , Junior Wells , Koko Taylor , Carey Bell , John Cephas and Phil Wiggins , C. J. Chenier , Nora Jean Bruso , Rory Block , Little Charlie & the Nightcats , as well as many Polish blues legends such as Tadeusz Nalepa , Slawek Wierzcholski , Dżem and many others .