The Cuban "NU" rare descargaseries" introduces the musical "Missing Link of Cuban Music, and the sound of the 1970s. The second edition has been digitally remanufactured by the most mysterious group of Cuban music history, Groopo Ross George, who suddenly appeared in Cuba mid-1970s. The only thing we know was led by people called Jorge Sorelle Leon. The sound is spicy and psychedelic and funky with black music such as funk and disco, and groove jazz sound in Afro Cuban, and a solid cuban beat, with 4 strokes, tight drums, synthesis, and organ on the base of the solid cuban beat. The original album is a reproduction of Mega Rare items with a value of tens of thousands of yen.