Originally Posted by Drum-Head
That goes without saying since it was Stewart who put the band together in 1977. However, Sting was also a big part of it, from what Stewart says, he brought most of the musical ideas to the table. I see it as a whole, great musicians came together to make great music. The Police was Andy, Stewart and Sting and would not have been what is was/is any other way - one of the biggest bands ever!
Indeed, Sting was definitely the primary songwriter. In the documentary "Everyone Stares," Copeland himself acknowledges Sting's brilliance in this area. And as you said, it was Copeland that formed the band, and I was alluding to that fact with my comment, but also that he was integral in shaping the overall sound of The Police.