Music can make you forget stress and burden. It is easy to feel tired during swimming. Use music as a positive way of "distraction". The soreness of the muscles will disappear with the drum beats in the music, and you will be instantly resurrected with full blood. "Jar of Love" by Qu Wanting, "A Person" by Wu Qingfeng and Ling Kai, and "Wild Child" by Elen Lenvon. All are good choices.