Answer:
In the middle of night, I surround the gong. In the middle of sight, I end the song
You'll have to consult an optometrist if you want to improve this.
This is a dead giveaway
A prehistoric reptile that lives today and the inspiration for the name of a popular sports drink.
Angels and pilots earn these.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.