This song! I learned to play it decades ago as a teen. It’s given me comfort all these years. It’s “He is Not Here: For He is Risen” by Steven Kapp Perry. Watch the video below to hear it and then get the sheet music here.
If you want more Easter music, check out my page here with links to Easter hymns and Easter songs published in the magazines of The Church of Jesus Christ of Latter-day Saints, since 1971. Happy Easter!