Okajima Dai - he is a friend of one of the sons of my dear friend Shinobu. His music sounds very nice and I wish him a lot of success. (www.okajimadai.com if you want to see his website and if you can read Japanese - you can also use the Google translation tool).
This is from his MySpace which I found by clicking at random on the website, then on the blog!
岡島大：心の旅 ＠ 代官山 NOMAD
岡島大：公式 MySpace | MySpace Music Videos