I'm surprised no one made a topic for them yet.
As I wrote in description, you may recognize their lead singer, Etsuko Yakushimaru, as she sang some anime OPs (for example in Denpa Onna to Seishun no Otoko or Arakawa Under the Bridge). But before that, in 2006, she was co-founder of Tokyo-based band Soutaiseiriron (相対性理論), which in English means theory of relativity.
Band is not very mainstream but it's known for its privacy. They rarely do interviews or let photograph themselves. Their PVs and MVs are also very weird and unrelated to the song meaning xD
But aside that, their music is very nice! Sometimes they play harder tunes but lot of their songs are catchy, positive, funny with nonsensical lyrics and what makes them even better is soothing and calm voice of Etsuko (though she sometimes screams xD). Anyway, I'll post few songs below, I recommend to listen to their albums. They're not very long and they're perfect for a short walk around the city or travel by bus, or something like that xd
Enjoy! : )
