On the Delta thing-
Adeimus is the name of the song. I have it on a pure moods CD. It is NOT sung by Enya. The Choral Group who is singing it is also entitled Adeimus. This is their 'name-song'.
My favorite music for airplanes would be.......
Signs of Love- Moby (CD- "18")
Most of Moby's "Play"
Snoopy vs. the Red Baron- Guardsmen
The theme from "Airplane!"
And a whole bunch more. I burned a CD with 18 songs all about planes. I am gonna need a new copy soon.....