As astonishing as it might sound, Mozart was already composing piano sonatas (K. 6-9) at the age of seven. It is wonderfully fresh and varied music. Henle has already published Urtext editions of these four sonatas in the version for piano and violin (HN 1077). As far as they are aware these have never been published solely as piano sonatas, even though Mozart described them thus in the title and they were assuredly played as such. Whilst the added violin provides tonal enrichment, it can be omitted without loss. A true treasure trove of easier, unknown original music by Mozart.
