Happiness
by Erin Mackey, Matthew Scott
on Sondheim on Sondheim [Original Broadway Cast]
Videos
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Erin Mackey - "Happy Working Song" (The Broadway Princess Party)
Erin Mackey Thank Goodness (Chicago)
Erin Mackey CRAZY Popular (Chicago)
Erin Mackey Graduation
Erin Mackey - “That’s How You Know” (The Broadway Princess Party)
Emma Watson Unmasks
Saturday Night Obsession (From "In Transit: Broadway's First A Cappella Musical"/Audio ...
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