This is an orchestral version of one of a set of Fourteen Tolkien Songs. A vocal score of the piece (voice part with piano accompaniment) is currently free to print out here:
https://stmaurpublishing.files.wordpress.com/2019/12/gil-galad-vocal-score-for-wordpress-1-december-2019.pdf

The complete set of ’Fourteen Tolkien Songs for Children’s Voices’ is available as a soft-cover, illustrated volume from Amazon at:
https://www.amazon.com/Fourteen-Tolkien-Songs-Childrens-Voices/dp/1492187534/ref=sr_1_14?dchild=1&keywords=charles+mccreery&qid=1587816617&sr=8-14

and Amazon UK here:
https://www.amazon.co.uk/Fourteen-Tolkien-Songs-Childrens-Voices/dp/1492187534/ref=sr_1_16?dchild=1&keywords=charles+mccreery&qid=1587816690&sr=...

‘For those who only know Tolkien via the recent blood-and-thunder films, this song-cycle by Charles McCreery will give a very different angle on the classic saga. Here we find a gentle and ethereal world, where rhythms lilt and words echo. The twelve songs, suitable for choir, evoke a dreamy, water-colour landscape with no harsh sounds, the tunes are singable and in a traditional style that Tolkien would surely have approved. The opening song, The Fall of Gil-Galad, is calm, unruffled and dreamy…’ Dr Julia Gasper, LGSM