sentences:  The jacks "nimble leap" which is both representative of the music being played and the men who are trying to show off to win the love interest's attention.Davis explains Shakespeare often uses the word "Jack" as a reference to ordinary other men but in this case it can have a double meaning of both the technology of the instrument and the woman's other male suitors.Line 13 also provides reference to "saucy jacks" which implies that the jacks are a rather impure and impudent lot.