"Rush", "Thunder" and "Rainbow".

Susum Hirasawa is a Japanese musician whose songs are widely used in many music mad (MAD videos). Three of the most commonly used songs include "Rush", "Thunder" and "Rainbow". The songs are loved by many creators for their beautiful melody, bright rhythm and rich emotions. Songs have a unique and catchy vibe and are often chosen as soundtracks to enhance or express the emotional impact desired by video content.