The song "Sound of the Underground" by Girls Aloud is about the freedom and excitement found in underground and alternative music. It celebrates the feeling of escaping the norm and finding joy in unconventional sounds and experiences. The lyrics describe a scene of disco dancing with the lights down low and the beats pumping on the stereo. The neighbors complain about the noise, but the protagonist wants more, urging to crank up the bass. This sets the stage for a wild and rebellious night. The song speaks of a sense of disorientation, with the waters running in the wrong direction and a feeling of mixed up signs. Yet, this confusion is embraced and enjoyed, as the protagonist can see it reflected in their own mind. It's a representation of the chaotic and exciting journey that is being part of the underground music scene. The "sound of the underground" is described as the beat of the drum that goes round and round, taking the girls to an overflow of freedom and fun. They dance to the sound of the radio and get lost in the electric night, where the bass line jumps in the backstreet lights. The beat continues to go around and round, symbolizing the never-ending energy and euphoria of the underground music scene. The song celebrates the power of music to push the protagonist higher, to elevate their emotions and capture their soul. The static from the floor below adds to the intoxicating atmosphere, and when the rhythm drops, it catches like fire, intensifying the experience. Overall, "Sound of the Underground" is about breaking free from societal expectations, immersing oneself in alternative music, and finding liberation and excitement in unconventional sounds and experiences. It represents the joy and energy that comes with embracing the underground music scene.