Born in may 1998, Albert McIntosh, also known as Bertie, is the son of Kate Bush and Danny McIntosh. Kate dedicated the song Bertie to him, and also credited him for encouraging and inspiring her to play live again, staging the Before The Dawn concerts in 2014 as a result.

Albert appeared during the show, singing the song Tawny Moon solo and appearing as an actor in the third act of the show.