This site introduces unknown Emanuel Bach (C. P. E. Bach).
C. P. E. Bach Sonata in G minor Wq. 65/27 (H. 68)
1st Movement: Andantino
2nd Movement: Larghetto
3rd Movement: Allegro
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sonata in G minor Wq. 65/27 (H. 68) is one of the most emotionally rich and expressive works among his keyboard music. This sonata, while influenced by his father Johann Sebastian Bach, showcases a unique style that marks the transition to the Classical period. The first movement is characterized by a calm yet internally tense melody. The following second movement expresses deeper emotions, highlighted by its serene beauty. The final third movement is a lively and energetic finale, showcasing Bachʼs technical skill and creativity. This sonata embodies the emotional diversity of Emanuel Bachʼs music and the musical transformations of his era, leaving a profound impression on the listener.
According to the commentary by Darrell M. Berg on Miklós Spányi's CD (BIS-CD-1189) (translated by ChatGPT4o):
"The Sonata in G minor Wq. 65/27, like Wq. 65/26, features a rare tonal structure for Bachʼs keyboard sonatas. It begins in a minor key in the first movement and shifts to the parallel major in the second and third movements. The first movement ʼAndantinoʼ unfolds with a regular flow of sixteenth notes, supported by a steady eighth-note accompaniment. In this movement, Bach fully utilizes the ʼspeakingʼ quality of repeated notes to express a character of innocence and melancholy. The subsequent ʼLarghettoʼ further explores the expressive power of repeated notes, with most phrases concluding in a ʼsigh.ʼ The final ʼAllegroʼ is a perpetual motion piece, with the right hand composed of a rapid flow of sixteenth notes, interrupted only by ʼsighs.ʼ"