The talented grade 11 student stepped onto Launceston's Princess Theatre stage, alongside 160 others yesterday, for Launceston College's first technical rehearsal of its musical  Seussical .

It was the first time the cast and crew had been in the theatre together preparing for its five-show season, which opens on Wednesday.

Grant, who plays the lead role of the Cat in the Hat, said it was daunting but exciting to be in the theatre.

``It's a bit daunting coming from the drama room, but it's really exciting,'' he said.

``Because I've had so little experience (in the theatre), it's a huge shock and I'm amazed at the incredible set and everything.''

 Seussical  is the second show Grant has performed in. Last year it was PCYC Youth Theatre's production of  The Music Man .

He said his version of the Cat in the Hat was different to Mike Myer's portrayal in the 2003  Cat in the Hat  movie.

``He's mischievous and he tells the story, but in his own way,'' Grant said.

 Seussical  is based on a variety of books by Dr Seuss including  The Cat in the Hat ,  Horton Hears a Who!  and  The One Feather Tail of Gertrude McFuzz .

Director Cheyne Mitchell said even if a Dr Seuss character wasn't written in the script, they'd tried to give it an appearance.

``If you're looking out, you might see Cindy Lou arrive and the Lorax,'' Mitchell said.

``The great thing about this show is even if you've never heard a song from  Seussical , whether you're four years old or 94-year-old, you know Dr Seuss's characters.

``It's a really touching story about standing up for what you believe in, even when everyone else tells you you're wrong.''

FACT FILE

WHAT: Seussical the Musical, presented by Launceston College..

WHEN: Wednesday to Saturday, 8pm each night. 2pm show also on Saturday.

WHERE: Princess Theatre, Launceston.

TICKETS: Adults $30; Children and concessions $20. From the Princess Theatre booking office, 6323 3666, or online at theatrenorth.com.au.