"Ya se va" its off her album "Mis Primeras Grabaciones"( My First Recordings) in 1984 when She was 12 years old. And the other song is "Te Amo Solo A Ti" from her album "And The Winner is.... Selena!" 1987 when she was 16 years old. And the last one "La Puerta Se Cerró" from her album Dulce Amor in 1988 when she was 17.
Ik ppl have already replied to you and this was 3 years ago but selena was tired and was always working. Her career was taking off so she was always doing commercials and interviews. And recording new songs. She was a hardworking woman.