There are two musical projects behind this moniker. One is an Electro-Funk/Electro-HipHop Artist having released two 12" in the mid 80's, the other is the following Eurodance production team:

Captain Jack was a German Eurohouse/pop production team formed in Germany in 1996, fronted by core member, songwriter and vocalist Francisco Alejandro Gutierrez, who adopted the stage name Franky Gee. The original female vocalist on the group's first two albums was Liza Da Costa, who attempted a solo career after leaving the Captain Jack team.