Esa Onttonen plays guitar and writes music.
This is his homepage.

News (updated March 30, 2012):
Composin' & teachin', arranged and conducted strings for the new Jukka Gustavson album "Root & Stalk & Flower Music" (released April 4), new Gourmet album "Cosmopolitan Sideshow" released in November 2011 (***** reviews in Soundi and Nyt/Helsingin Sanomat).

An old biography is available at the Fiasko Records website.

Email goes to "esa", who has a mailbox at "fiaskorecords.com".