Tryptophan Front Cover

Tryptophan

Bat Rat Maker

Track List

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Debut Full-Length Album: Tryptophan

One year after releasing the experimental 6-track EP Experiment 01, Bat Rat Maker presents their first full-length album, Tryptophan, named after the compound known for calming the mind. "Tryptophan" is an essential amino acid for both body and mind, and a source of serotonin, which brings a sense of peace and happiness. True to its name, this album is crafted to resonate with listeners' hearts, offering a touch of comfort and hope in everyday life. At the same time, it channels anger and raw human emotion, creating a dynamic range of feelings across 16 tracks.

Including previously released singles like Death?, Choice, I, and HERO, the album spans from distorted love songs to emotional anthems, anchored in alternative rock and UK rock sounds. Gentle at times, sharp at others, Tryptophan simultaneously awakens quiet reflection and fresh energy in its listeners.

To celebrate the release, the album launch live SEROTONIN will be held on Sunday, October 12, at Senzoku Gakuen College of Music, Big Mouth. (No tickets required, free admission)

Past Playlist In

Making Love

Spotify • New Music Everyday - tuneTracks (curated by TuneCore Japan) • 1 Oct 2025

Artist Profile

  • Bat Rat Maker

    Bat Rat Maker are Masaya Mori - Vo&Gt (21) Tomohiro Suzuki - Gt (21) Rentaro Kohei - Ba (21) Ryota Takezawa - Drs (21) In April 2023, a four-member band was formed for a university live performance, consisting of members born in 2003. Bat Rat Maker is a factory that creates things that may be shunned and do not exist in reality. With a concept centered on its unique musicality and sounds, the band operates as a borderless, next-generation unit based in Tokyo. In December 2023, they released their debut single, "Anon." On April 29, 2024, they followed up with their first EP, "Experiment 01," featuring six tracks. Later that year, in December, they released their second single, "Death?," and in January 2025, their third single, "Choice." Starting from March 29, 2025, under the title "Two Weeks, Two Singles!" they released "I" and "HERO" in consecutive weeks. They are set to release their first full-length album, Tryptophan, this fall.

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