"Under the Apple Tree" CCFF7-R OST 16

This theme first plays when Zack first enters Banora Village, sees the giant Banora tree by Genesis' parents' house, and remembers that Angeal told him he never stole from that tree.

You can purchase Crisis Core Final Fantasy VII Reunion here: https://ffvii.square-enix-games.com/en-gb/games/crisis-core/#buy-now

As of the release of this video, no official soundtrack for Crisis Core Reunion has been released (to my knowledge). Buy the original Crisis Core soundtrack here: https://music.apple.com/us/album/crisis-core-final-fantasy-vii-original-soundtrack/266734037