Z?2f0i1e2l0d914

z?2f0i1e2l0d914 (called on the JASRAC database) is Disc 2, Track 8 on the XenobladeX Original Soundtrack. It plays as the area theme in caves. It is one of the few area themes that takes priority over Don't worry.

Etymology
The track title can be split into 3 parts: the prefix 'z?', the digits '20120914', and the letters 'field'. The letters likely indicate that this is music heard in the 'field', or area music. The digits can be interpreted as the date 2012/09/14, or the 14th of September 2012, possibly the date in which the track was composed or recorded. The prefix z? is similar to other tracks that start with 'z' and a number (possibly followed by 'b'); the significance of both this and the standard z-number prefix is unknown.