What is crazy kc and joj?

KC and JoJo are an American R&B duo made up of brothers Cedric "K-Ci" Hailey and Joel "JoJo" Hailey. The duo originally rose to fame as members of the group Jodeci in the 1990s before embarking on a successful career as a duo.

Some of their most popular songs include "All My Life," "Crazy," and "Tell Me It's Real." They have released several albums and have achieved both critical and commercial success in the music industry.

KC and JoJo are known for their smooth harmonies and soulful vocals, and they have been credited with helping to shape the sound of contemporary R&B music. They continue to perform and record music to this day.