"also watch the relationship between toby and donna lynne champlin closely."
I had to look at my playbill just to figure out who you were talking about, so I wouldn't consider this to be essential for someone to know ahead of time.
Scarywarhol, like I said, you don't have to have this vast knowledge of the show or Sondheim and do a report on all the characters head of time to enjoy the show. I went in blind. The show is easy to follow and suggestions to analyze instruments and stuff like aren't necessary, regardless of what some Sondheim elitists would want to you to think.
Like a firework unexploded
Wanting life but never
knowing how