Aretha Franklin

After more than half a decade, the reigning Queen of Soul is still putting her formidable pipes to work singing classic songs like "Respect" and "Chain of Fools." During her appearance at Ravinia, there's a good chance that Frankline will dig into her most recent release, The Great Diva Classics, which includes soulful renditions of Adele's "Rolling in the Deep" and Etta James's "At Last."