Mary Had a Little Lamb in Left Hand Tabs

This week third graders got this piece of music which we will be working with in class next week.  I am reposting it here for anybody who may have been out.  Notice that the song is written in tablature -- a kind of music written that tells you what to do -- in this case what holes to cover -- as well as what notes to play.   Note that we only are using notes we make with our left hand.

My question for you next week will be -- what part of the music does this kind of notation leave out? (Hint -- think of Diggy Diggy Dong).