Sydney Smith was a celebrated virtuoso pianist known for his operatic transcriptions and virtuosic showpieces. His Op. 107 Bolero serves as a display vehicle featuring rapid broken-chord figures and rhythmic drive.
The primary challenge lies in the rapid arpeggiation patterns in the right hand which require a loose wrist and fluid motion.
Comparable difficulty and character — good candidates for what to learn next.
Bolero (Op.107) is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 Bolero (Op.107) lasts about 4 minutes.
Bolero (Op.107) 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 Caprice espagnol by Sydney Smith, Bohemian Girl - Brilliant Fantasia by Sydney Smith, Ballade pour piano by Sydney Smith — see the full similar-pieces list on this page.