def extract_minor(chord):
    """Checks whether the given cord is specified as "minor". If so, it pops out
    the specifier and returns a boolean indicator along with the clean chord.

    E.g.
    ----
        Am  --> True,  A
        B#  --> False, B#
        F#m --> True, F#
    """
    if chord[-1] == 'm':
        return True, chord[:-1]
    else: return False, chord