Electronica-Pop

She sings pop, dance, a little reggae and r&b, but mostly pop and dance.

pop dance was orginated in the eraly 50's

No, modern and pop dance are not at all the same. modern is a combination of contemporary and ballet. while pop is its own genre often referred to as hip hop dance. modern uses different music in comparison to pop dance which uses pop or rap music.

I'm not sure about the dance, but I know that pop music became significant in the 1950s- so it depends what you mean by dance. A music video with pop dancing or just a dance?