Produced by Sell A Door theatre company in association with Greenwich Theatre, Sincerely, Mr Toad previews at Southhill Park Theatre before spending the month at the Edinburgh Fringe Festival.
The show will then tour Scotland before a week at Greenwich Theatre in London.
With music by David Andrew Wilson, lyrics by Wilson and Katie McIvor and a book by David Hutchinson, Sincerely, Mr Toad charts the turbulent life of the author of The Wind in the Willows and his relationship with his son Alastair (Keith Jack).
Since making the final of Any Dream Will Do in 2007, Keith Jack has performed in new musical Only the Brave and has spent the last two years touring Joseph and His Amazing Technicolour Dreamcoat in the leading role.
"I am very excited to be welcoming Keith to our production of Sincerely, Mr Toad" said Phillip Rowntree, the show's director. "Keith has an incredible voice and I for one can't wait to hear him bring the songs of Alastair to life".
Further casting is still to be announced.