The first one is "Adiemus" by Enya. I use to have a CD with that song years ago;
https://www.youtube.com/watch?v=aL8kZ-iVk90

The other one is "Time" by Hans Zimmer;
https://www.youtube.com/watch?v=MuAGGZNfUkU

"The Wolf and the Moon" by BrunuhVille:
https://www.youtube.com/watch?v=HEf_xrgmuRI

There is a forth song on a video, "The Detailed Universe This will Blow Your Mind". It doesn't give the name of the song, however, I did post this link to that video;
https://www.youtube.com/watch?v=4i-QvCIHRoc

Enya - Caribbean Blue...This one's a very beautiful song;
https://www.youtube.com/watch?v=5yRgiXh2fP4

A 5th one here is also by Enya - "Only time".
https://www.youtube.com/watch?v=IBSmgPxsIcA

Enya - Dark Sky Island...Another very beautiful song.
https://www.youtube.com/watch?v=YSJAU71jCI8

Enya - Long Long Journey
https://www.youtube.com/watch?v=laaq6rw9eJ0

Enya- One By One
https://www.youtube.com/watch?v=qlT3TFU4kTw

Enya - The Loxian Gate
https://www.youtube.com/watch?v=5FrWoVC6SZ8

Last Time By Moonlight - Enya
https://www.youtube.com/watch?v=zc9FrHWz8Kc

Enya - Echoes In Rain
https://www.youtube.com/watch?v=8DDHulO485k

Enya - China Roses
https://www.youtube.com/watch?v=N8XXcDUrdVk

I already have this one on another journal, however, I'll post it here too.
Orinoco Flow (Sail Away) - Enya
https://www.youtube.com/watch?v=2zkjQVh5KmQ

Enya - Flora's secret
https://www.youtube.com/watch?v=RQVmUl4K9NA

Enya - The Forge Of The Angels
https://www.youtube.com/watch?v=nsUFP-Sv__M

Enya - The Comb Of The Winds
https://www.youtube.com/watch?v=knqGb-ArAQk

ENYA - White Is The Winter Night
https://www.youtube.com/watch?v=zsX_xqG-Reo

Enya - And Winter Came ... - 06 Dreams Are More Precious
https://www.youtube.com/watch?v=fHaE9ABXPtw

Enya- Magic of the night.
https://www.youtube.com/watch?v=ZEJKECy0tGw

Enya - Trains And Winter Rains
https://www.youtube.com/watch?v=mWUIbqY1uLI

Enya - On My Way Home (video)
https://www.youtube.com/watch?v=uinlWB5W8rU

Enya - Amid The Falling Snow
https://www.youtube.com/watch?v=r_lYby3DmfA