Nowadays I usually walk on my own, so having something to listen to is a must. On my very early morning walks I usually turn off the playlist and listen to all the birds. I love listening to birds. I read in the SELF magazine a list of songs they suggest are great for workouts. Personally if I had to listen to Beyoncé's Who Run The World Girls, I'd purposefully step out into oncoming traffic!
Choose songs you like. Songs that are uplifting, that have a quick beat you can walk brisk to. Have a variety of playlists for different days or different types of weather. Or even use the walking time to catch up on an audiobook (I've been stuck on the same audiobook all year so maybe now I'll finish it.) Or listen to some podcasts. But don't walk with the volume up so loud you can't hear yourself think. Always safety first, especially if you walk alone.
Currently, my favourite playlist is the album Come Around Sundown by Kings Of Leon but I'm putting together a few more playlists all roughly an hour in length even if my walk falls short of an hour at least I'll still have a variety of songs to listen to if I should be walking longer than anticipated.
As for the SELF magazine playlist... It's in that photo, just don't waste money on buying the magazine unless you're 18-25 years old. It falls flat for someone in the 40+ category. I sometimes wish I hadn't nagged Zinio to deliver it. Seriously.