You know, AndreB, that the conga player Carlos Patato Valdez "wrote-played-composed- the melody line of Oye Como Va? He never got any credit for that nor any € fo. Patato and Tito used to be very thirsty , Ive seen many shows of them. One night back in 1983 a quite drunken Tito told me how Oye Como Va say his daylight. One 'night Patato played a solo, in that solo he played the Oye Como Va melody. After the gig Tito asked Patato what that melody was. Patato answered: "which melody?" He could even not remember. That night Tito wrote in his hotel room in less than 15 min Oye Como Va!!