La de la Mochila Azul (The girl with the blue backpack) is the debut studio album by Mexican recording artist Pedrito Fernández, (Pedro) released in 1978 by Columbia Records and on Epic Records and CBS Records International labels in Mexico, Spain, Ecuador and Peru. The album and single 45 were released in the USA and Canada markets in 1980. Thirty years later as Pedro Fernández performed the song as part of his repertoire at the sold out National Auditorium concert in 2009, the record had already sold over 20 million copies.