From kohei yamamoto's latest album "wavelength2" (scheduled for release in February 2024), whose theme is "life", the lead single "happy birthday" is now available! kohei yamamoto is a member of Back and Tip, president of Tetsumanju-Corps, and supports several others, while also playing vocals, guitar, keyboards, and bass in his solo works. This work expresses "gratitude for one's parents" through lyrics and a nostalgic melody line. Lyrics/Music by kohei yamamoto Vocal/Guitar/Keyboards/Bass by kohei yamamoto Alto Saxophone by tomato Chorus by rauju Drums by Tatsuya Shiraishi