The Loot table for Dungeon Chests seems to be skewed. I'm having trouble finding more but in the first two dungeons (with mob spawners not the Strongholds) Out of four chests I received 6 copies of the "Cat" Music Disk. Due to the small sample size it could just be random chance but has anyone else noticed this?
MC-19160
Standard Dungeon Loot table
Resolved
Duplicate
0
It is random... probably certain items have had the random percentage chances increased but they are still random.