When I lived in a city small enough that I could walk to work in forty minutes I wore a walkman and sang along..gregorian chant, the Beatles John Prine, loads of stuff. Often I would forget the walkman or the battery would run out, but I would sing the songs anyway. I would sing through out the days at work . My students would sometimes Join in and we'd have a laugh before serious work began.
The walk on the way back home at the end of the day was always done to more joyful music, irish fiddle tunes, Scottish jigs and reels..I seemed to arrive home in seconds rather than minutes.
I still sing a lot, especially whilst pottering in the garden. The joys of music are grand, aren't they.