Glass Heart

The song's core theme is "strength in vulnerability and salvation through music."

As the title "Glass Heart" symbolizes, the song deals with the fragile and delicate heart (humanity).

The lyrics speak of recovery from heartbreak, past failures, and personal difficulties.

The song conveys a strong message of finding oneself and moving forward through performance (music), while acknowledging imperfections and pain.

Main genre: Emotional rock / Post-grunge
Subgenre: Power ballad / Alternative rock / Symphonic rock

Overall atmosphere: Wistful, passionate, and epic. A dramatic portrayal of powerfully rising toward hope despite pain.

Melody: Very catchy, with a tear-jerking melody reminiscent of anime rock, a genre popular among Japanese people. The chorus, in particular, has a high range and a strong emotional appeal.

Rhythm: The heavy rock beat is complemented by complex, sometimes syncopated drumming, giving the song a driving force. The drum tone is tight and clear.

Instrumentation: The core of the band sound is electric guitar, bass, and drums, with the addition of piano and strings (synthesizer) adding breadth and depth to the sound.
Guitar: The intro and verse verse use clean or delayed arpeggios to express delicacy. The chorus features power chords with heavy distortion, expressing an explosion of emotion.

Vocals: The vocals are high-pitched and passionate. The delicate verse transitions into powerful, throat-clean vocals in the chorus, skillfully expressing the emotional ups and downs.

This song is an emotional power ballad that combines a delicate melody with an explosive rock sound.
It is a dramatic and grand piece that touches upon the wounds and pain deep within the listener's heart, while conveying a strong will to "stand up despite it all."