The researchers are conducting a project to document the history of the Musicians' Union in the UK. They are using archival research, interviews, and secondary sources to analyze the MU's role in influencing the music industry and policies affecting musicians. Some initial themes they have identified include viewing musicians as workers, the MU's external relations, copyright issues, responses to new technologies, and changes in relevant laws. The researchers aim to publish their findings in books, articles, and other formats to provide a comprehensive history of the MU.