Lyric discussion by ebraico 

Cover art for Cassiopeia lyrics by Sara Bareilles

Sara starts off the song by telling the Ancient Greek myth of the woman Cassiopeia (who became the constellation due to an eternal punishment of her vanity). Then, she creates her own, sequel-like story to the mouth. It tells how, whilst in the form of a constellation, Cassiopeia fell in love with an adjacent shining star (or constellation). At first it talks about how Cassiopeia wants to shine bright to get the attention of this fellow star, as they are far away in the universe from her. She wants her rotation course to collide with him because then that will be her only peice of "heaven" in this eternal punishment. She is trying to make the bad in to good. As Cassiopeia was doomed to circle the earth, sometimes upside down, it talks about how she missed the star and is now lost in the "interstellar sea" as she rotates the earth once more. As she begins to weep that nothing good will come of her life ever again (I mean, she's trapped forever in the stars...alone..that's pretty sad!), the shooting star appears and the two collide. She proclaims "what a day" since she was only moments ago crying about her loneliness. As they are stars, when they collide they of course combust and create a supernova (this is could be a reference to sex). And as you know when a supernova occurs, it leaves behind stardust which comes down to earth and becomes matter, thus creating human life (which is an analogy to a child).

This is essentially a ballad (and no not the celine dion version, I mean ballad as in telling a linear story through song), but could also be an analogy for something else!