In 2001, Karn began to work with Gota Yashiki, Vivian Hsu, Masahide Sakuma, and Masami Tsuchiya in the band The d.e.p., or doggy eels project. In 2001, he worked with Paul Wong on his "Yellow Paul Wong" release. Karn left London in 2004 to live in Cyprus with his wife and son, financially enabling himself to keep working as a musician/artist. In 2009, Karn also released his autobiography, titled "Japan & Self Existence", available through his website and Lulu, which details his music career, his interests in sculpture and painting, his childhood, relationships, and family.