Oh gosh, you're going to get me going on stuff I love. I really think the fully scores of all of these shows should be listened to, but I'll also write some of their "greatest hits." Anywho, here we go:
The Great Comet (others have already mentioned it, but I'll echo their statements): Prologue, Pierre, No One Else, Dust and Ashes, Charming, Letters, Sonya Alone, Pierre and Andrey, The Great Comet of 1812.
Fun Home (again, it's been mentioned, but whatever): Ring of Keys, Days and Days, Edges of the World.
Waitress: When He Sees Me, Never Ever Getting Rid of Me, Bad Idea, I Didn't Plan It, You Matter to Me, She Used to Be Mine.
Hadestown (there are only four songs released from the Off-Broadway production, but you can find the concept album all over the place): Way Down Hadestown, All I've Ever Known, Wait for Me Why We Build the Wall, Our Lady of the Underground, I Raise My Cup.
Be More Chill (this one really needs context to make sense, so I suggest you listen to the whole thing with Wikipedia open, or listen to the full audio recording that should still be on YT somewhere): I Love Play Rehearsal, The Squip Song, Two-Player Game, Michael in the Bathroom, The Smartphone Hour (Rich Set a Fire), Voices in My Head.
I'm sure I'll think of more later, but these are the ones off of my head. If you like The Great Comet and Dear Evan Hansen, I most strongly suggest Be More Chill (which is, in my opinion, Dear Evan Hansen 2.0) and Dave Malloy's other work, specifically Preludes and Ghost Quartet. Also, I know you said your knowledge thins after 2012, but I wanted to make sure you know about Next to Normal? It came out in 2009, I believe, so you might be aware of it. If not, listen to it. I'm pretty sure you'll think it's great.
Updated On: 6/14/17 at 10:14 PM