Music had better match your running. To put it simply, our running has the indexes of pace frequency and speed, and music also has the elements of beat. If you can get your feet stuck in the music beat of your running, it will make your running very regular and healthy.
For example, running a kilometer in 10 minutes requires 150bpm (beats per minute) of music; If you can run a kilometer in 4 minutes, you need 17 1bpm music.
The conversion relationship between running pace and music BPM is probably:
10 min/km =6 km/h = 150bpm
9 minutes/km = 6.67 km/h = 153bpm
8 minutes/km = 7.5 km/h = 156bpm
7 minutes/km = 8.75 km/h = 160bpm
6 minutes/km = 10 km/h = 163bpm
5 minutes/km =12km/h = 166bpm
4 minutes/km =15km/h = 17 1bpm
I recommend an App called "Octopus FM" (Baidu's "Octopus FM" can be downloaded from the first link). There will be a professional radio station called "Running" in "Exploration", which is divided according to bpm. Before running, you can turn off the corresponding radio station and listen while running, which is particularly sensational and can assist in exercise.