'Easy' is a rather confusing and misleading term when applied to piano music, but is often understood to cover anything up to about Grade 3 standard. Of course, if you're a complete beginner, Grade 3 seems impossibly hard! And some publishers use the term 'easy' very loosely, as in ABRSM's 'Easier Piano Pieces' series of books (some of them are not easy even if you've passed Grade 5 or 6).
Anyway, here is a list of 'easy classics' which are free to download. They are all genuine classical pieces (not arrangements) which were composed for piano students. Nothing harder than Grade 3 here!
The following pieces are a little easier than Grade 1 standard:
Some pieces of Grade 1-2 standard:
Some pieces of Grade 2-3 standard:
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