Hip-hop act Wu-Tang Clan's second album moved 612,000 units in its first week and entered the charts at No. 1, according to SoundScan figures obtained from the group's label, Loud Records. The music industry was looking to Wu-Tang Forever to spark lackluster sales. The double disc was seen as one of the biggest releases of the summer, and the 10-member rap group from Staten Island, N.Y., has so far reached those expectations. "Sales were incredible," Loud Records West Coast regional manager Tommy Capistrano said Wednesday. "We were actually expecting more, but we are not disappointed. The album looks as if it will eventually sell 6 million-7 million copies worldwide." The band is going on tour with alternative rockers Rage Against the Machine, a move expected to widen the Clan's appeal.