Hello!

What's the name of these three songs?

The first one if in this video from 0:06 to 0:32

https://youtu.be/w9QtttzUG3Q?t=6s

The second one is in this video from 0:06 to 0:25

https://youtu.be/MTUFxMHYJOo?t=6s

And the final one is here from 1:58 to 2:46 and again from 3:19 to the end

https://youtu.be/F3qKqnGcCH0?t=1m58s


I've been trying to find any of these songs for some time now, but to no end.
Can anyone please help me?