Formed in January 2017 when Akira Morinaga Judy, owner of the ONE&ONLY singing voice called "Whiskey Voice," and Seishi Yamamoto, active in the HM/HR world, met.

The band's name "amber" means "amber" and "lumber" means "timber" or "rubbish. Bassist Yamamoto named the band after the concept of collecting rubbish to create a jewel like amber. The band is simple, consisting of an acoustic guitar and an acoustic bass, but incredibly groovy! The groove and emotional music transcends the boundaries of genres, so keep an eye out!