Charles Leslie Johnson was a prolific American composer of popular piano music and rags. This caprice features flowing scalar passages and arpeggiated figures that reflect the salon style popular in the early 1900s.
The primary challenge lies in the rapid scalar runs and maintaining a fluid, even tempo throughout the decorative sections.
Comparable difficulty and character — good candidates for what to learn next.
Butterflies Caprice is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Butterflies Caprice lasts about 3 minutes.
Butterflies Caprice 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 Belle of Havana Waltzes by Charles Leslie Johnson, Blue Goose Rag by Charles Leslie Johnson, Butterflies by Charles Leslie Johnson — see the full similar-pieces list on this page.