Z5m20i12r04a28

z5m20i12r04a28 is Disc 2, Track 2 on the XenobladeX Original Soundtrack and Track 5 on the Xenoblade Chronicles X Soundtrack Selection. It is split into two parts: the first plays from the start until 2:42, and the second plays from then until the end. The first part is a remix of N木ig木ht木L.

The first part plays in the cutscene when the sky clears as Cross sees the expanse of Primordia for the first time. The second part plays in the following cutscenes:
 * gives the order to attack the Ganglion in.
 * The party catches a breather between waves while defending the East Gate in Chapter 8.

Etymology
The track title can be split into 3 parts: the prefix 'z5', the digits '20120428', and the letters 'mira'. The significance of the letters is obvious; the digits can be interpreted as the date 2012/04/28, or the 28th of April 2012, possibly the date in which the track was composed or recorded. The track is one of several in the XenobladeX Original Soundtrack beginning with 'z' and a number (possibly followed by 'b'); the significance of this is unknown.