The cool Perfume's sound world is created by Yasutaka Nakata, who is the songwriter and the sound producer. Yasutaka Nakata forms his own music unit named "capsule." You can find various capsule's songs in YouTube. I would recommend the mash-up video instead of a genuine capsule's song. Here is "capsule + Daft Punk + Beastie Boys."
In addition, a mash-up of Perfume and Beastie Boys is also awesome. Enjoy "Macaroni + Rhyme the Rhyme Well."
I should attach a genuine Perfume's song, because this is a Perfume fan blog. You must watch the fabulous "Secret Secret."