Blue Friday is a contemplative character piece by Arne Dich designed for pedagogical use. It stands out for its accessible harmonic language and gentle, moody atmosphere.
Careful attention to touch is required to balance the accompaniment and the melody.
Comparable difficulty and character — good candidates for what to learn next.
Blue Friday is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 3.
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 Blue Friday lasts about 2 minutes.
Blue Friday 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 Prelude in C major by Johann Sebastian Bach, Gymnopédie No. 1 by Erik Satie, Gymnopédie No. 2 by Erik Satie — see the full similar-pieces list on this page.