Clare Kummer’s sentimental compositions were staples of early 20th-century parlor repertoire. This piece is defined by its clean, diatonic harmonic language and delicate, vocal-inspired phrasing.
Focus on clean articulation of the melody while balancing the soft harmonic support of the inner voices.
Comparable difficulty and character — good candidates for what to learn next.
'Tis All I Know is rated Henle level 2 of 9 — beginner repertoire, roughly ABRSM grades 2–3. In the RCM system it corresponds to about level 2.
You should be comfortable at Henle level 2 — meaning you can already play level 1–2 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 'Tis All I Know lasts about 3 minutes.
'Tis All I Know 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 Für Elise by Ludwig van Beethoven, At Bedtime, TH 70 by Pyotr Tchaikovsky, Albumblad, EG 109 by Edvard Grieg — see the full similar-pieces list on this page.