Over 40 hip-hop acts and DJs including 50 Cent, Drake, Ludacris, and Rick Ross were on the bill at the Openair Frauenfeld festival in Switzerland, but it was Nas who got one of the biggest reactions when he brought out Lauryn Hill. Wearing a “Life Is Good” tank top in honor of his new album, the rap veteran performed a set full of his classics before L Boogie joined him on their timeless record “If I Ruled the World (Imagine That).”