Billy Mayerl's piano transcription of this standard transforms a jazz ballad into a lush, virtuosic concert solo. It is defined by sophisticated harmonies and intricate syncopation.
The primary challenge is balancing the dense, complex chords while bringing out the essential jazz melody.
Comparable difficulty and character — good candidates for what to learn next.
All the Things you are is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 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 All the Things you are lasts about 4 minutes.
All the Things you are 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 Canaries' Serenade by Billy Joseph Mayerl, Liebestraum No. 3 in A-flat major by Franz Liszt, Nocturne in C-sharp minor by Frédéric Chopin — see the full similar-pieces list on this page.