The Humming by Enya is in Am at 90 beats per minute and runs 3:07 across 39 bars. It uses 7 chords — Am, Em, D, C, F, G, E. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? The Humming guitar melody tab.