The WSJ reports that so far Google’s music service in China—which is a partnership between Top100.cn and Google (NSDQ: GOOG)—has attracted five advertisers who have committed $370,000 in spending. Doesn’t sound like much, considering the service was officially launched seven months ago and that ad revenue is split between Top100.cn and the record labels. However, the paper says that the companies plan to have 30 advertisers on board within six months, some of whom will dedicate $1 million to it. That could provide the start of a real revenue stream for the labels in China, since they don’t currently generate anything from the 99 percent of music downloads there that are illegal.