Several of Terry Pratchett's novels, both Discworld and non-Discworld, have been adapted into plays and performed. Stephen Briggs was the first person to adapt one of Terry Pratchett's books for stage and performed them along with his Studio Theatre Club. Stephen Briggs has adapted the majority of the plays that have been produced except for 'Lords and Ladies' by Irana Brown, 'Nation' by Mark Ravenhill and the Musical Packs by Matthew Holmes. The plays have been performed by both professional as well as fan groups.