Heidi Klum and Seal are planning a duet on Seal's upcoming album, his rep confirms. "Heidi does sing on one song on Seal's new album System," said the spokesperson. The track is called "Wedding Day," which Seal wrote for his model wife the day they got married in Mexico in May 2005. "Family, my wife and children, that's my reason for being," Seal said last month. "I am finally in a content and happy place to the point where I feel like I need to sing about it."
