Kool & The Gang are an American jazz/R&B/soul/funk/disco group. They originally formed in Jersey City, New Jersey, U.S.A. in 1964. They went through several musical phases during the course of their recording career, starting out with a purist jazz sound, then becoming practitioners of R&B and funk, progressing to a smooth pop-funk ensemble. They have sold over 70 million albums worldwide.The late 1970s saw a lull in Kool & the Gang's except for the album Open Sesame which yielded the title track "Open Sesame" which achieved some success in the Saturday Night Fever soundtrack. Then came new lead singer James "J.T." Taylor who joined the group — with 1979's Ladies' Night. Their #1 hit in 1980's "Celebration," from Celebrate!, co-produced by Eumir Deodato. More international hits followed in the early 1980s, including "Big Fun," "Get Down on It" and "Joanna."