GAK SATO was born in Tokyo in 1969.

In 1994 he created the band diet music in Tokyo.

diet music debut compilation album"multidirection2"(1995 brownswood/Talkin'loud).

diet music remixed Japanese pop singer "Caori Cano" & "Zoo".

in 1996 Gak moved in Milan. he has participated 2 compilation albums for "Milano 2000" label.

In 1999 he became Artistic Director of TEMPOSPHERE, the contemporary music label of Right Tempo Records in Milan.

His debut album "post-echo" (Temposphere, 1999).

Gak has participated on various remix projects (Easy Tempo Experience) with the Easy Tempo label (which reissues and remixes Italian soundtracks of the 60s and 70s). Successes include remixes of compositions by some of the greatest Italian masters of film music such as Piero Umiliani, Armando Trovajoli, Berto Pisani and Lesiman.

In 1999 Gak Sato released a new single featuring Hip Wagging-Foot Shuffling remixed by Amon Tobin (Ninja Tune) along with a version of the great Metti una sera a cena by Ennio Morricone performed together with Alessandro Alessandroni on vocals.

He has participated in Sonar Festival '99 (Barcelona).

In 2001 Gak released his second album TANGRAM (Temposphere). On this record he makes less use of samples, getting some of the best Italian jazz musicians involved in compositions that blend the techniques of contemporary production with the talent of great improvisers. The title track Tangram has been issued in remixes by the producer Yukihiro Fukutomi(avex japan) and Flanger(a.k.a. Atom Heart, Burnt Friedman (Ninjatune)features the trumpet artistry of Nargo (from Tokyo Ska Paradise Orchestra).

The track Green City is Gak's version of a song by Lounge Lizards co-founder Steve Piccolo, with guest vocals by Piccolo himself. This track has been featured on many compilations in the US and Europe.
Gak Sato's live performances include the Tangram Tour with Steve Piccolo and Pepe Ragonese joining him in a live trio with video (2002 in Portugal, London, Monte Carlo, Italy)
He also performs in Steve Piccolo's Expedition concerts on programming, keyboards, theremin & electronics, and is co-producer of the new Expedition CD. He has worked with Steve Piccolo on sound art installations in collaboration with leading visual artists and photographers. Since 2002 he is professor of Techniques of Sound in Art at the Accademia Carrara fine arts academy of Bergamo. He is participating in the John Cage tribute "A Year from Cage", a one-year series of events and performances organized by MMT and Auditorium. Recent collaborations include projects in New York and France, gallery performances, radio shows.

In 2004-5 Gak has participated Vinicio Capossela's reading concert "non si muore tutte le mattine" tour,

in 2006 participated Vinicio's album "ovunque proteggi".

In 2006 released his 3rd album "informed consent", "Furniture Music"(ricordi & sfera Japan)