Produced by Gustavo Borner at Igloo Music Studios, Burbank California.

Legends of Oz is a feature-length animated film directed by Dan St. Pierre and starring the voice-and-vocal talents of Lea Michele, Dan Akroyd, Martin Short, Bernadette Peters, Kelsey Grammar, Jim Belushi and Patrick Stewart.

The film wasn't well received by critics, however online reviews from members of the public were very favourable.

Bryan Adams and I wrote three songs for the film, the main one being "One Day", performed by Lea Michele, the voice of Dorothy.

I've written a few songs for films over the years -- by which I mean, I wrote a song, I submitted it, they put it in the film, end of story.  But this was different.

Bryan and I worked closely with the director, the producer and the music supervisor for more than three years. Once a month -- or sometimes once every few weeks -- we'd get a request to re-write a lyric, adjust a tempo, re-record a drum, change a key, or write another song altogether. I enjoyed the process. It was challenging -- in a very positive way -- but it could also be frustrating. Sometimes you'd ask yourself, do they really know what they want?

Regardless, it was a new experience and a great opportunity to learn. Bryan had immersed himself in a number of films over the years, but this was "a first" for me. Would I do it again? Absolutely.  It was a lot of work, but it was also a lot of fun.

I was at the studio one day when Dan Akroyd was recording dialogue (Dan provided the voice for the Scarecrow character). The director ask Dan to repeat the same line of dialogue over and over again, but with a different tone and perspective each time.  He must have done 20 or 30 takes, each of them dramatically different from the one before. Dan was really getting into it. Perspiration was dripping from his forehead. In the end, I don't know how the director decided which one to use, because they were all amazing. I felt like I'd witnessed a consummate professional at work.

I also attended a session (via Skype) when Los Angeles voice actor Randy Crenshaw helped shape some of the characters. Afterwards, Randy's voice was erased and replaced by the better-known celebrities that appear in the film, but I thought Randy's contribution was incredible. The guy's a genius. Google him. His film and television track-record is stunning (Little Mermaid, Ice Age, Shrek, Ren and Stimpy, The Simpsons, Happy Feet ... it goes on and on).  Working with Randy was another highlight for me.

If there were any disappointments, it was the lack of input during the recording of the music. I thought we'd have more creative control.  My vision for "One Day" was much slower and darker ... Beatles-meets-Pet Sounds. Instead, it became a bubbly pop song.