Mothers and fathers are frequent members in popular lyrics, and Dylan's mother, Beatty, has even joined her famous son on stage once. Here is the frequency list for the mothers and fathers in the RS500's and Bob Dylan's lyrics:

                RS500           BD
ma                 2           17
mama           58          53
momma          8           17
mommy           12          0
mom             12           0
mother           43           31
_______________________________________________
                    135           118

dad             10           3
daddy           29           13
father           25           48
pa                 6             6
papa           27             6
_______________________________________________
                    97           76