What is beethoven opus 14 no 1?

Beethoven's Piano Sonata No. 9 in E major, Op. 14, No. 1, was written in 1798 and is considered one of his earlier works. The sonata contains two movements:

1. Allegro, in E major
2. Allegretto, in E minor

The first movement is written in sonata form and opens with a cheerful melody in the right hand, accompanied by a simple arpeggio in the left hand. The second theme begins with a brief imitation of the first theme, followed by a more lyrical melody. The development section is marked by a sudden change of key and a more dramatic, virtuosic section. The movement ends with a recapitulation of the main themes.

The second movement is in ternary form and is a contrasting, more introspective piece in E minor. The main theme is a 16-bar melody in the right hand, supported by arpeggios in the left hand. The middle section is marked by a change of key and a more harmonically adventurous section. The piece ends with a restatement of the main theme, but with a different harmonic progression.

Overall, Op. 14, No. 1 is a relatively light and cheerful sonata, with a focus on melody and charm. It is considered one of Beethoven's more accessible early works.