Takayuki Kato, who showed up on a wrong day by misunderstanding the date for his concert, have met Yuki Saga on the day by chance, and played together for the first time, which resulted in a super fun performance, so they formed a duo unit immediately. That is SYNAPSE! On January 19, they will present an impro/bossa nova concert to celebrate the 25th anniversary of SYNAPSE, ahead of the release of their second CD! (Their first album was a live recording at the Pit Inn.)