Capsule (カプセル Kapuseru?, stylized as CAPSULE since autumn 2013]) is a Japanese electronica duo consisting of vocalist Toshiko Koshijima and producer Yasutaka Nakata. Recommended albums: Stereo Worxxx, Sugareless Girl
I've been listening to these two pretty much non-stop during work. They've got like a dozen albums, all more fun than the last.
I need to start listening to more from them than just random songs, I think the only albums I heard in full are Player and Wave Runner.