The entire song is very, very good but from 4:42 onwards, it's nothing but an entire minute of the most moving, most powerful symphony ever to grace the Gundam universe. A majestic finisher indeed worthy of Unicorn itself.
Too bad the last minute of the song hasn't shown up in any of the episodes so far. They're probably saving it for when the Full-Armor RX-0 shows up in future ones.
"May those who accept their fate find happiness. May those who defy their fate find glory."