To sum up Gary Clark Jr. is more challenging every day. He’s a musical universe unto himself, expanding at a nearly immeasurable rate, ever more hard to define — as a mind-blowing guitarist, a dazzling songwriter and engagingly soulful singer. His debut album, Blak And Blu, is a rocket ride from the Mississippi Delta of a century ago to multiple points still out beyond the horizon. Rock and R&B sure, but blues, soul, pop, psychedelia, punk and hip-hop are also in Clark’s expansive musical embrace and insatiable hunger for inspiration, which he’s internalized into music all his own. And his two acoustic blues performances on the soundtrack album for the acclaimed movie 12 Years A Slave show the distinct talent and personality he brings to his music. Gary Clark Jr has captivated audiences from Coachella to Glastonbury in the past. Finally, he’s scheduled to delight his audience at den Atelier in Luxembourg as well.