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Of course, Ne-Yo is a writer so he was like “Send me the joint without the second verse”, so we sent him the record and he wrote the second verse. Ne-Yo then jumped on the record and I was like “Yo this would be pretty cool.” As far as the writing goes, I wrote everything before that. She ran into Ne-Yo and he was like “Yeah I want to do something with you!” This happened to be one of the last songs we did on the album, so it was perfect. Keri was hot at the time and a few people wanted to work with her. It was crazy because Danja sent it to Polow and he heard it for Keri. I felt the beat was crazy and I liked what I did to it. When we did the record, I felt good about it. We say it a lot like “This is our number one”, but for it to actually happen is a cool feeling especially for someone who hadn’t had that before. I don’t know if you expect, especially if you’ve never had it before, it to be number one. Kevin Cossom: Yeah it did blow up pretty big. The song eventually peaked at #3 on the Billboard Hot 100 and topped the Hip Hop/R&B chart. In an interview we did with hit song-writer Kevin Cossom, he reflects back on the success of the song. Prior to release of “Knock You Down”, Keri already had smashes such as “The Way I Are” with Timbaland, and “Turnin’ Me On” with Lil Wayne, but it was this Danja-produced song that catapulted her to superstardom. With a huge following even before the release of her debut album, it was only a matter of time before Keri Hilson made her mark on the charts.