Famous for her membership in Japan's Hello! Project, this pop vocalist is also notable for her Top 10 studio albums First Kiss (2002), T.W.O. (2003), and X3 (2004). Her hit singles include "Momoiro Kataomoi," "Yeah! Meccha Holiday," and "The Bigaku."
She joined the Hello! Project at age fourteen and quickly rose to fame, performing with the pop duo GAM and several other music projects.
She hosted a radio program called Matsuura Aya No All Night Nippon.
She began dating fellow J-pop singer Keita Tachibana in 2001. The couple married in 2013 and welcomed their first child, a daughter, in late 2014.
An actress as well as a singer, she co-starred with Yuki Saito in the 2006 movie Yo-Yo Girl Cop.