[1] They have played various music festivals, including Loud Park 08, Taste of Chaos, Metal Female Voices Fest, sharing the stage with the likes of Slipknot, Avenged Sevenfold, Story of the Year, and In This Moment.

[4] After vocalist Anza Ohyama ceased performing with the Sailor Moon musicals in 1998, she embarked on a solo career for almost two years,[5] receiving help from guitarist Hiro and his brother Mar.

They found bassist Kawady and drummer Okaji and changed their name to Head Phones President before releasing their first single, "Escapism", in 2000.

[7] On October 7, 2009, the mini album Prodigium was released on the Spiritual Beast label, and was mastered at West Side Music by Alan Douches (Mastodon, The Agonist).

[8] On September 3, 2010, they released the self-cover album Pobl Lliw, which includes rearranged versions of old songs as well as some all new tracks.

[20] Head Phones President are scheduled to perform in Brazil at SANA in Fortaleza in January 2025;[21] and in Spain at the Rock Imperium Festival in June 2025.

[23] For example, the song "Alien Blood" represents Anza's troubles growing up in Japan as mixed race; "I had problems with other students.

[24] Anza has stated that she wanted to be the female version of hide, an influence that inspired her to express herself in a way that she could not in the pop music she used to make before Head Phones President.

[25] In addition to the bands Nirvana and Boøwy, the members have also cited non-musical influences such as actress Minako Honda, mafia films, and director Martin Scorsese.