I found a couple 2 hour long music collections written by Tim Janis. They're almost entirely instrumental - piano, flute, harp with some orchestral accompaniment. The videos are scenic as well with many natural landscapes and animals. The first has quite a collection of video content with bridges.
Anyway, it's just music to let run in the background if you want.
Bridge of Peace collection by Tim Janis
... and if you're looking for a couple more hours of relaxing "tunage" here's another:
Scottish Highlands collection by Tim Janis