Gentleman's Rule is a Chicago-based a cappella group known for their soulful, harmony-rich sound. The group is comprised of eight members, all of whom are accomplished vocalists in their own right. They have released several albums and EPs, showcasing their versatility and range, from original compositions to clever arrangements of popular songs. With their unique blend of jazz, R&B, and pop influences, Gentleman's Rule has built a loyal following and critical acclaim.