An oratorio is a large-scale piece of music for choir, orchestra and vocal soloists, which tells a story without staging or costumes. Most oratorios are based on stories from the Bible, a source that Handel's English audiences knew well.
Enthir is a Bosmer sorcerer and merchant found at the College of Winterhold, and has connections to the Thieves Guild in Skyrim.
The third Aetherium Shard is located in the Storage Room of Mzulft, which is found if you turn to the West before you enter the Dwemer ruin. I believe it has a high level lock guarding the entrance door. Mzulft is located to the far west of Skyrim, north-west of Riften.he first Aetherium Shard is located in the final room of Arkngthamz. The Dwemer Ruin is found south-east of Markarth, in the Reach.