This modern Nocturne utilizes delicate, introspective harmonies and a lyrical right-hand melody. It is a contemplative piece that emphasizes tone production and nuanced phrasing.
The performer must achieve a continuous, bell-like tone quality throughout the lyrical lines.
Comparable difficulty and character — good candidates for what to learn next.
Blue Waking (Op.22) 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 Blue Waking (Op.22) lasts about 4 minutes.
Blue Waking (Op.22) 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 Clair de lune by Claude Debussy, Nocturne in E-flat major, No. 2 by Frédéric Chopin, Andante by Wolfgang Amadeus Mozart — see the full similar-pieces list on this page.