Natsukawa Rimi (夏川 りみ) is a Ryukyuan folk singer who performs Ryukyuan music. Her genre is sometimes referred to as Kayokyoku but it is stated on her website that it is Okinawan Folk. She blends traditional music elements with modern elements, which gives her a characteristic sound. Her album Single Collection Vol. 1, has been awarded the Nihon Record Grand Prize for excellence.
Her style of music is becoming increasingly popular in Japan and her song Nada Sousou or Nada So So as it sometimes is referred to is (as of October 25, 2006) the third most popular song on the Japanese iTunes. The same song also came 21st in the 2003 Oricon Top 100 Singles rating of sold singles in Japan and 58th in the 2004 Oricon Top 100 Singles rating.