This G Major Andante molto by Pyotr Ilyich Tchaikovsky is a tender and lyrical piece, often found in collections of his shorter piano works.
Cultivate a warm, singing tone and employ a light, supportive pedaling technique.
Andante molto in G major is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 Andante molto in G major lasts about 3.5 minutes.
Andante molto in G major is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.