Endoh took the industry by storm when he released the two Enson albums and the subsequent third, in which he covered many famous anime theme songs.

Due to their success, Endoh went on to sing signature songs with the respective artists, such as "Arashi no Naka de Kagayaite" with Chihiro Yonekura,[1] "Sousei no Aquarion" with Akino,[2] "Butter-Fly" with Kōji Wada,[3] "Bakuryū Sentai Abaranger" with Hideyuki Takahashi from Project.R,[4] "Eternal Blaze" with Nana Mizuki,[5] "Yuzurenai Negai" with Naomi Tamura,[6] "Pegasus Fantasy" with NoB,[7] "Makka na Chikai" with Yoshiki Fukuyama,[8] "Kimi Taiyou ga Shinda Hi" with Maon Kurosaki,[9] "SERIOUS-AGE" with Faylan,[10] "We Are" with Hiroshi Kitadani,[11] "KINGS" with Angela,[12] "DREAM SOLISTER" with True,[13] and "UNINSTALL" with Chiaki Ishikawa.

After graduating from high school, he joined a group called The Hiptones, but after it dissolved in 1993, he became half of the acoustic duo Short Hopes.

He sang some opening themes for anime until two years later, he and Hironobu Kageyama joined together to form the Metal Brothers.

[citation needed] In 2000, Ichirou Mizuki gathered four artists to form JAM Project: Masaaki Endoh, Eizo Sakamoto, Rica Matsumoto, and Hironobu Kageyama.

[citation needed] Vocally, Endoh specializes in sustained high notes, covering the upper male range.

The album contained covers of popular anime opening themes in the late 1990s and early 2000s, including "Uninstall" by Chiaki Ishikawa and "Sousei no Aquarion" by Akino.

In 2011, he formed SV Tribe with Hiroshi Kitadani and Aki Misato and the group continues to write and perform opening music for many anime series.

[22][23][24] He explained that the "V" stands for "voice" on his Extreme V Machine live tour, as well as signifying the number 5 in Roman numerals.

[25] In November 2014, Endoh released his first acoustic album called Present of the Voice, containing several arrangements of his signature songs.

A campaign to promote the album requested fans send in photos which would be shown while the track my beloved played.