Figured they would add other music besides the ones in the new ones in PoTD in 3.45. Let's see what I have found so far. (Haven't unlocked 101-200 yet so there might be more I may have missed)

1. Hullbreaker Isle HM
2. Lost City of Amdapor HM
3. Arboretum
4. Pharos Sirius HM
5. The solo instance from the 3.3 Warring Triad story.
6. The Antitower
7. Sohr Kai
8. Vanu Vanu beast tribe
9. Great Gubal Library NM
10. Sohm Al
11. HW boss battles until 3.2.

There was another one but I forgot what it was. What other musics have you found in PoTD 3.45?