Yo this is beautiful! All the tracks were fun to listen to. The last track is my favorite. The pitch-bend you did to the harp or guitar was really creative. The only thing I would say is to add some variance in the notes/chords throughout as I loved the ideas you were trying to execute for these tracks but was left wishing for some development by the end. Even just changing the octaves will go a long way in making a track sound like it's growing.
Overall, really solid submission. Keep it up!