My favorite song is "Battle cry" by Imagine dragons. So, why I love that song? You see, this is quite hard question: firstly, I think, this song has something pessimistic in its content, for example "Do or die" - there is nothing good in this words, right? And listen to music in the first part of the song: low and high tones, and then - energetic, active music - this rhythm makes your heart beat. That's why I love this song.