The Sonatinas and Sonatas are completely different. There are no public domain editions, they have to be purchased from dealers, which supports the publishers so they can publish more music. Many historic pieces are in hard-to-reach libraries in Europe, and it is not so easy to walk in and ask for a photocopy. Plus, they are often very hard to read. There are two editions of the Sonatinas, one by Lawrence, published by Lyra, which is considered standard, and one published in Europe, that is meant to be urtext, but has errors and unstylistic ornamentation. I have both, and will combine them to make my own interpretation the next time I perform the Sonatinas. There are two editions of one Sonata, again one Lyra, and one European. The others have only one edition. There is one that is a transcription of a concerto by Jarnovich by Sophia Dussek, I think, that is completely different. I think the Sonatinas are the most interesting, and the Sonata in C Minor, which I consider to be by Jan Dussek as published. The others vary in interest, are somewhat lighter in style, less
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