This is a Romantic-era arrangement of a chorale melody designed for keyboard performance. It features traditional German organ-style polyphony adapted for the piano's expressive range.
At Henle 3 this is a late-beginner piece — comfortable hands-together playing is assumed, and musical shaping starts to matter. The main demands: independent voices that must each sing on their own line; a true singing tone, with the melody floating above the accompaniment; and chord voicing — bringing out one note inside a handful of others.
Beyond that, expect precise articulation — the difference between crisp and blurred is the piece.
Focus on bringing out the chorale melody clearly above the accompanimental inner voices.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Choralvorspiel 'O dass ich tausend Zungen hätte' is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Choralvorspiel 'O dass ich tausend Zungen hätte' lasts about 3 minutes.
Choralvorspiel 'O dass ich tausend Zungen hätte' 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 Chorale: Break Forth, O Beauteous, Heavenly Light by Johann Sebastian Bach, Prelude in C major by Johann Sebastian Bach, Gymnopédie No. 2 by Erik Satie — see the full similar-pieces list on this page.