KMels flying robots have pretty freaky abilities, but luckily they seem more interested in show-biz than terrorizing humanity. Though theyve already done a crude James Bond number, this time theyre rocking more instruments and playing challenging pieces like Also Sprach Zarathustra (aka the 2001: A Space Odyssey theme). The piece de resistance is two quads playing a guitar-like string, with one tapping it and the other changing pitch.