Members: Sachiko M, Ami Yoshida

Cosmos is the duo of Sachiko M and Ami Yoshida. It was formed in 1998, in an extremely natural fashion. The only thing set down at the beginning was the name cosmos, provided by Ami. Although the unit has given only one or three concerts a year since its formation, it has, through its unique feeling of space and its overwhelming presence, gained an enthusiastic following which continues to grow.