Speaking of songs from the heart, here's My Heart Will Go On from 1 Mic 1 Take:
https://www.youtube.com/watch?v=mXByVAPnNyY&feature=youtu.beI might take some heat for this, but I found aspects of the harmony (up until the climax) a bit underwhelming by Celtic Woman standards. It felt more like an ad-lib that at times didn't quite work out, rather than a well-conceived harmony. Perhaps that was the "1 Take" aspect of it coming into play.
Don't get me wonrg the first part was still really pretty, it just wasn't overwhelmingly spectacular like the last third of the song.
The harmony in the climax of the song was excellent and the new ending was REALLY pretty.
The individual singing was great! Eabha's haunting voice was pretty epic in this song.