Frederic Woodman Root's '5 Devotional Songs' are likely sacred or reflective pieces for piano, emphasizing a calm and devotional mood. They would probably feature tender melodies and a sense of spiritual contemplation.
Cultivate a smooth, legato touch and sensitive pedaling to achieve the intended serene and devotional atmosphere.
5 Devotional Songs is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7.
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.
5 Devotional Songs is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.