Take 6 is an amazing 6-piece a cappella vocal group who have been around for 25 years. Their vocals were inspired greatly by the late, great vocal arranger Gene Puerling who was the leader of Singers Unlimited (enjoyed popularity 1970's, 1980's). I posted a 1 minute video of the Take 6 Concert in Richmond Hill, Ontario which you can see at: https://www.youtube.com/watch?v=iYdAc834JTc
They are simply wonderful and have a great sense of humour on stage. The show had the audience interacting and singing along. Their sound man Tony Huerta is an integral part of their show adding some beatboxing sounds and building a beautiful mix all around the voices!