Wrong music for the Warring Lanner mount

[Rhode]

Time: n/a
Frequency: always
World name: Leviathan
Character name: Rhode Fey
Retainer name: n/a
NPC name: n/a
Monster name: Sephirot
Class/Level: 60
Party or solo: party
In-game time: n/a
Area and coordinates: n/a

When using the Warring Lanner mount, the music that plays is "Battle to the Death", which is the first phase.

However the Sophic Lanner, which also plays the same song for the first phase, plays the second phase music. Every primal mount in the game actually plays the second phase music, or the music that plays after the ultimate attack. The only exception being Nidhogg, however he isn't a primal.

Is this a bug or is this intended?

[Darkstride]

I doubt it's a bug since it has been that way since Sephirot was introduced. They would have fixed that by now. When Sophia was released, they probably just didn't want the triad mounts to all have the same music so they gave Sophia's her phase 2.