With a table knife, extensive knowledge of organ anatomy, and a great love for the instrument, Anno Bos maintains 'orphaned' organs.

Anno Bos, a dedicated organ mentor, works to maintain neglected organs in churches facing closure due to declining attendance. He uses his knowledge and tools to tune pipes and ensure the instruments remain functional. Bos's efforts are part of the Vereniging Mentoraat Klinkend Erfgoed, which oversees 35 organs across the Netherlands. Despite the challenges of finding new mentors, the organization aims to preserve this cultural heritage for future generations. Bos's passion for the organ is evident as he plays and maintains the instruments, highlighting the importance of keeping these historical artifacts alive.