This site introduces unknown Emanuel Bach (C. P. E. Bach).
Emanuel Bach Sinfonia in G Major No. 1 Wq. 182-1 (H. 657)
Movement I: Allegro di molto
Movement II: Poco adagio
Movement III: Presto
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sinfonia Wq. 182-1 (H. 657) is one of his later works, composed in 1773. This piece was written during his time in Hamburg, commissioned by Baron Gottfried van Swieten. Overall, it is characterized by sudden emotional changes and contrasts, possessing an expressiveness that transcends the classical framework. Particularly, the lively rhythm of the first movement and the profound lyricism of the second movement are impressive. The third movement features a light yet tense development. The "aesthetics of emotion" in Emanuel Bachʼs music is vividly reflected, allowing one to enjoy his innovative compositional techniques.
Summarized by ChatGPT4o from the commentary attached to Sergio Cánovasʼs YouTube video of this piece:
Emanuel Bachʼs Symphony Wq. 182-1 (H. 657) is a three-movement work notable for its original structure and characteristics of the empfindsamer Stil. The first movement (in G major) consists of four sections, beginning with an ambiguous theme and the unusual use of pedal tones. The development section is marked by strong contrasts, bold modulations, silences, and sudden dynamic changes, concluding with a brief recapitulation and modulation to E major. The second movement (in E major) is in a free form, with an impressive contrast between a quiet theme and lively motifs. After a lyrical moment in the middle section, the theme is recapitulated, leading to a leisurely coda that returns to G major and connects to the next movement. The third movement (in G major) is in theme and variations form, featuring contrasts between piano and forte and unusual modulations, culminating in a sudden crescendo for a brilliant conclusion.