Last week Apple launched its iTunes Music Store in Japan with great success, becoming the number one such service in the country. Now Japanese musicians under contract with Sony are defying the record company to try to get their songs listed on iTunes, reports AP. Sony has not opted to join the service. “At least one artist has already gone against his label to offer his songs on iTunes, notes the story. “And a major agency that manages Japanese musicians said Wednesday it was interested in a possible deal with Apple Computer Inc., regardless of the recording companies’ positions.” Reportedly Apple and Sony are in talks, but have reached no decision to date.