The 30th anniversary of the Tyne and Wear Metro gave BBC Newcastle an idea.
Why not mark the occasion with a musical extravaganza?
We'd just need some really good stories, some great music, beautiful film, a composer and...people.
And so Metro the Musical was born.
In the first week in December the composer, Benjamin Till, held auditions in Sunderland and Newcastle to find performers.
Sharuna Sagar went talent spotting on Wearside.