Mr Beattie said his vision for the play involved Lemmy in the studio while Motorhead recorded their last album Bad Magic, which was released four months before the frontman’s death in 2015.
“During that time, Lemmy was quite unwell,” Mr Beattie said. “Obviously unbeknownst to the band at that time he was quite ill with cancer.
“How does a man like Lemmy face these challenges, while writing the lyrics to what possibly is the last album he’ll ever write?”
Mr Beattie said he wrote the first act within two weeks of attending the Lemmy Encore festival on 3 August and was part-way through act two.
His aim was to have the play completed within the next few weeks and to have it staged in 12 months.