Tom|420 wrote:

Is it allowed to listen to music while at the commands of an aircraft?

Of course.

Is so, do you?

Yes.

What else do you do during long flights once auto-pilot is engaged?

Autopilot?

Do you just take time to watch the landscapes?

That too. One of the advantages of high-wing aircraft.

George Patterson
Great discoveries are not announced with "Eureka!". What's usually said is
"Hummmmm... That's interesting...."