sentences:  For example, Shakespeare in the first stanza of the sonnet compares the Dark Lady's playing of the virginal, a musical instrument similar to the piano, to his want for the Dark Lady to be touching him instead of the virginal.Shakespeare plays off the phrase, "jacks that nimble leap" giving it a sexual connotation.In the virginal a jack was the, "upright piece of wood fixed to the back of the key-lever, and fitted with a quill which plucked the string as the jack rose on the key's being pressed down".