This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sonatina in G Major Wq. 63-7 (H. 292) is a work written for solo keyboard, characterized by its concise form and bright, accessible melodies. The key of G major imparts a lively and pleasant atmosphere throughout the piece, allowing for the enjoyment of Emanuel Bachʼs distinctive delicate emotional expression. This sonatina, though short, exhibits elements of the empfindsamer Stil, with intricate melodic embellishments and clever harmonic developments that leave a strong impression. Particularly when performed on the clavichord, the subtle changes in tone and dynamics become prominent, deepening the nuances of the piece. It is a work that, while concise, demands a diverse range of expression from the performer, making it enjoyable for both beginners and seasoned musicians alike. This piece, which encapsulates the charm of Emanuel Bachʼs keyboard music, offers listeners an experience that is both easily enjoyable and deeply impressive in its complexity. It is a solo piece that transcends time, beloved for its approachable yet sophisticated nature.