Tone is an interesting question because part of the inspiration of looking to song is that Geisel himself - when you think about his animated version of The Grinch - embraced the idea of using songs in unconventional ways, as part of conveying a narrative. The use of music, in this film, is very unconventional, which I love.

There are countless times where you're trying to channel somebody who's not there, but that's what you have to do. But Audrey Geisel, who has executive produced this film and Horton, and who works remarkably close with me, is a great source of information. (The Simpsons creator) Matt Groening once told me that one of the most important roles that he fulfills on The Simpsons is being the keeper of the integrity of the original vision.

Songs give you incredible opportunity to convey a tremendous amount in a relatively short period of time. The first thing that John Powell, our composer, says is, "Is the song engaging you to tap your toe?" If you're not tapping your toe, it doesn't matter what you're doing in the song, it's not going to work. But, if you can get the audience to be engaged by the song, then it gives you the opportunity to accomplish so much, in a very concise way.

I grew up with probably three different authors having a seminal influence on my childhood, Dr. Seuss being one and Maurice Sendak being another. That was my parents, who exposed me to their stories. That's how I was introduced to the whole idea of not just reading, but storytelling in general.

Absolutely, you rise and fall based on your creative team. I have continuity across different films that I've done. I was even fortunate enough to reach back and include people that had worked on Horton with me, as well.

Why did Ted Geisel end up writing and illustrating for young minds? He has specific imagery in the book, and we never would have moved beyond the discussion phase, if we couldn't have found an expression for The Lorax, dimensionally, that was true to the soul of what comes through in his simple line drawings, on the page.

I think that every enduring story that has expressions over multiple periods, that role of being the keeper of the integrity of the vision is a very important role.