Flagio is the Osaka-based contrabass artist and composer Tetsuro Hori.
Using the contrabass and digital and analog effects, he creates lyrical and hypnotic soundscapes that straddle the genres of ambient, electronic, and post-classical music.

At the age of 14, he began to play the contrabass and eventually started performing with classical orchestras in Osaka.
His interests later shifted, and he became a member of several bands playing post-rock, jazz, dub, and acoustic music.
He began his solo project Flagio in 2017.

He frequently performs in Japan with both local and international musicians and dancers, and performs in some countries in Asia and Europe.