I am a lover of classical music, so I was certainly familiar with "morning mood" as part of the Peer Gynt music by Grieg, but I did not know how to say it in the original language...now I know! :)
I like that morning mood much better than the one I had fallen into over the years. I think I am experiencing a morning mood transplant.
In fact my entire cultural encounter with Norway so far is accomplishing several much-appreciated mood transplants. Though I must also give myself some credit for making good effort in that same direction.