This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs "Wq. 70" is a collection of works for keyboard instruments, including the organ, that represents a significant fusion of his religious spirit and musical innovation. This collection beautifully harmonizes the strict style suitable for church music with the delicate and emotionally rich expressions characteristic of his "Empfindsamer Stil" (sensitive style). Each piece is imbued with complex counterpoint, refined harmony, and a majestic atmosphere, earning high praise in religious ceremonies and concert settings. "Wq. 70" serves as important evidence of Emanuel Bachʼs exploration of the diverse possibilities of keyboard music and his pioneering of new horizons in organ compositions. This collection, cherished not only by organists but also by keyboard music enthusiasts, is essential for a deep understanding of his contributions to religious music.