I'm at the end of my 30 free days and I haven't unlocked all content, only ARR and part of ARA, no HW yet, but here are my favs so far from content I've done/places I've been:

Battle/Instanced Run Music: 1. Lost City of Amdapor (lvl 50) 2. The Striking Tree, hard (Ramuh) 3. The Whorleater, hard (Leviathan) 4. The Navel, hard (Titan)

Non-Combat: 1. Serenity (The Black Shroud Field Theme - piano part) 2. Innroom 3. Undying Faith (music that plays in the settlement at the observatory in Central Coerthas) 4. On Westerly Winds (La Noscea Field Theme)

Your favorites from the game?