Lyric discussion by bolddeciever 

Cover art for Pavlov's Daughter lyrics by Regina Spektor

I'm surprised nobody's mentioned the connection to the later song "Consequence of Sounds," in which she reprises the first lines of this song with the opening of the third stanza, with the line

"The gravedigger's still getting caught in the machine"

Later in the stanza she says

"Just cause one song is done There’s always another one"

A very cool connection, since Consequence is a growth and a refinement of the melodic rap thing she does in this song.