Hmn... I'm getting notes of 15.5's Egoistic Flowers in the beginning phase, and then some of 18's usual soundfont, a mix of synth track and trumpets minus the piano found in earlier games... and then it does switch to a piano for the solos. And then among about the second phase, during the key change leading to the end phase, there's a switch to chimes(?) Or a similar percussion for the melody. It definitely has the 18 soundfont. It doesn't lead in any one direction towards a soundfont era.
