This is the most extensive sonata of Opus 10, it was composed in 1798 and is dedicated to Countess Anna Margarete von Browne.
Beethoven's seventh sonata, like the eleventh, is one of those that belongs firmly to the category of "total masterpiece that nobody hears," and is the last of the relatively experimental op.10 sonatas.
To begin with, what about the motivating economics of this sonata? Just hear how often the first four notes in the first movement, a single beat-offset simple scalar descent through a bar line, repeat in drastically different ways, or the first three notes in the fourth movement. There is also the great wealth of ideas contained in the movements: the first contains between 7 and 12 themes in the exhibition alone (depending on how it is counted), and another theme emerges in the development section.
The second movement is one of the most profound and heartbreaking things that Beethoven wrote. Comparable to the huge glacier on the third from Hammerklavier and it contains some beautiful textures.
The third movement features a hard-hitting trio and minuet that is beautifully melodic and highly contrapuntal and the fourth movement is a wonder of careful construction; it sounds like an ever-evolving movement, so cleverly the main theme and its recurring motif are treated, and yet it sounds almost improvised.