As 2009 comes to a close, I present to you the #1 song in America according to Billboard Magazine's Hot 100 chart. This song furthers my theory that Dance music is merging with Top 40 and Hip Hop. A few months ago I presented Dance singer Cascada's (D) Evacuate the Dance Floor which included Hip Hop elements along with House DJ David Guetta (F) directly including Hip Hop singer Akon in his Sexy Bitch song. Here we have lily white girl Ke$ha (USA) singing Hop Hop directly to #1 with Tik Tok. Earlier in the year she sang with Flo Rida on his #1 hit Right Round. Happy New Year everyone!! Hopefully we'll hear some good PI news in 2010.