Gerhard Gundermann was a digger driver and songwriter, comrade and rebel, officer cadet and draft resister, informant and informant. Above all, he was an idealist, someone who always pushed forward and often clashed with others. The book contains letters and memories, documents and interviews, as well as many photos. This makes this unconventional person more understandable. Christiane Baumann researched in the archives of the State Security. Colleagues recall the time of music with him. Additionally, filmmakers Andreas Dresen (director), Laila Stieler (screenwriter), and Alexander Scheer (who plays Gundermann) share their thoughts. The book is released alongside the premiere of the major film Gundermann. Almost all texts and photos are published here for the first time.