From the creator of Straight No Chaser and the producer of Under the Streetlamp comes GENTLEMAN'S RULE. Don't miss this amazing singing sensation, making their Chicago premiere at the Riverfront Theater this fall! The 10 men of Gentleman's Rule take a cappella music to a new level. Just as Straight No Chaser and Under The Streetlamp introduced a new generation to amazing music, Gentleman's Rule introduces new music to this style of singing! Gentleman's Rule brings all the harmony and fabulous singing that audiences love to broad range of music -- including songs made popular by David Guetta, Bob Marley, Nelly, Stevie Wonder, Bruno Mars, B.o.B., Wild Cherry, Outkast and more! You've never heard music like the unforgettable sound of Gentleman's Rule.