Johann Wilhelm Hässler was a prolific German keyboardist and composer known for his accessible teaching and performance literature. These sonatas are quintessential examples of late 18th-century galant style, emphasizing clear structures and articulate phrasing.
At Henle 4 this is an intermediate piece that expects secure technique and real attention to phrasing. The main demands: Alberti-bass accompaniment kept quiet and even under the melody; precise articulation — the difference between crisp and blurred is the piece; and fine finger independence within the hand.
Beyond that, expect fast passage work that stays light and even at tempo.
At roughly 10 minutes, stamina and memory become part of the challenge — plan practice in sections.
Consistent, clean fingerwork in the rapid Alberti bass passages is essential for a professional delivery.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Deux sonates is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Deux sonates lasts about 10 minutes.
Deux sonates is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Caprice et Sonate by Johann Wilhelm Hässler, Alla Turca by Ludwig Berger, Albumleaf No.15: Minuet in Baroque Style by Shuwen Zhang — see the full similar-pieces list on this page.