OLDCODEX

OLDCODEX (オルドコデックス ORUDOKODEKKUSU) was a Japanese rock band that was formed in 2009 in Tokyo, Japan, and frequently performed theme songs for the Free! series.

Overview
The band released a total of six studio albums, three extended plays and eighteen singles. The group performed the opening themes for the Free! series since the first season, the ending theme of the High☆Speed！the movie －Free! Starting Days－ movie, and the theme song for Free!–the Final Stroke– the second volume.

The rock band also produced and performed songs for other well-known anime series such as THE BASKETBALL WHICH KUROKO PLAYS., God Eater and SERVAMP. In addition to performing the theme songs for several anime series, their lead singer, Tatsuhisa Suzuki, also provided the voice acting for one of the characters.

On December 27th, 2021, it was announced via the band's official website and Twitter that the group would be disbanding in April, 2022, with the theme song for Free!–the Final Stroke– the second volume being OLDCODEX's final musical release.

Members

 * Ta_2 (aka Tatsuhisa Suzuki )
 * YORKE.

Etymology
The name of the band was created by combining the words “OLD” and “CODEX”, the former meaning "of old age or the past" and the latter meaning “manuscripts, such as the Bible.”

Suzuki's stage name for the band, "Ta_2", is a phonetic pun on his nickname of "Tatsu". When the English pronunciation for 2 is written in hiragana/katakana it produces a tsu sound, thus the name is "Ta_tsu".

Trivia

 * OLDCODEX's previous guitarist, R•O•N, is also a prolific composer and has composed and/or arranged several character songs featured in the Free! series, including: Ao no Kanata, Break Our Balance, and Over the Dream.