This is an extended variation of the popular Donaldson tune, featuring a more elaborate narrative structure. It maintains the jaunty, upbeat character typical of early 20th-century popular piano arrangements.
Players must manage the jumpy left-hand patterns while keeping the melody crisp and detached.
Comparable difficulty and character — good candidates for what to learn next.
'Tain't No Sin (To Dance Around in Your Bones) is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 3.
You should be comfortable at Henle level 2 — meaning you can already play level 1–2 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 'Tain't No Sin (To Dance Around in Your Bones) lasts about 3 minutes.
'Tain't No Sin (To Dance Around in Your Bones) 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 'Tain't No Sin by Walter Donaldson, 'Cause I'm in Love by Walter Donaldson, Bach-bwv-anh-114 by Johann Sebastian Bach — see the full similar-pieces list on this page.