Rent is called Rent because you don't own your life, you rent it, that's what I got from the song...
Spring Awakening is called Spring Awakening because it's the awakening to the Spring of your life, your body and life starts to truly come alive, leading to the summer and most fertile part of your life... that's why the show ends with "purple summer." Purple being a really rich, beautiful color and summer being a realy fruitful part of the year, if the metaphor for a person's life are the seasons.
I never really understood why 110 in the Shade was titled what it was... they never say those words in the show, and I get it that it's hot... but... it's not really metaphorical other than saying it's uncomfortable when your hiding from your real life? Which is a stretch... Audra nicknamed it "Lizzie's big day..." I don't know what I would re-title it...
Why was Grease called Grease? I'd probably re-title it "Rydell Days" or "The Show that will be re-vived to death."
that's a really big mic...