1) Keep it simple.
2) Let content dictate form.
3) God is in the details.
4) Ideas come from everywhere and they change.
5) Plot-driven musicals are most satisfying.
6) The audience needs to believe the premise and buy into the central dilemma; if it does, the plot can be as ridiculous as it wants as long as it follows LOGICALLY from the premise, e.g., AFUNNY THING HAPPENED ON THE WAY TO THE FORUM.
7) A FUNNY THING HAPPENED ON THE WAY TO THE FORUM is almost perfect.
8) Bobby in COMPANY and the giant in WOODS are neither gay nor 9/11 terrorists.
9) Sondheim doesn't like recitative. Opera doesn't do it for him.
10) SWEENY TODD is not an opera.
11) Neither is PORGY & BESS.
12) Opera Companies usually (not always) mess these up.
13) Sondheim doesn't cook, and often writes in a local steakhouse/sports bar, with the jukebox playing something completely different.
14) He also doesn't frequently compose at the piano, because muscle memory limits imagination. He also deliberately writes in a different key than he's used in a while in order to stay fresh.
15) Ticket prices still grate me, though they were worth it.