This is the real la bamba intro:

    E-------------------------------------------------------------
    B-------------------------------------------------------------
    G-------------------------------------------------------------
    D---------2-0-4-2-----0-0-------2-0-4-2-----------------------
    A------0-4----------2----4-2-0-4------------------------------
    E-0-2-4----------0-4-------------------0----------------------



    E-------------------------------------------------------------
    B-------------------------------------------------------------
    G-------------------------------------------------------------
    D---------2-0-4-2-----0-0-------2-0-4-2-----------------------
    A------0-4----------2----4-2-0-4------------------------------
    E-0-2-4----------0-4-------------------0----------------------