What makes Angel Song (Eve no Kane) by The Brilliant Green notable?

'Angel Song' is notable for its chart performance, reaching high positions on the Oricon charts and solidifying The Brilliant Green's popularity in Japan. The single's release during the holiday season also contributed to its cultural impact, becoming associated with Christmas music in Japan. Released in the early stages of The Brilliant Green's career, 'Angel Song' marked their third single following their self-titled debut album in 1997 and the hit 'There Will Be Love There' in 1999. By this time, the band had begun to establish themselves as a significant force in J-pop, blending alternative rock with pop sensibilities.