You can find the Dealer's list here
http://www.animeboston.com/dealers/map.shtml
Argh!! you're so lucky!! I want to go just to see Yoko (I'm a big fan of hers)
Blessed with an endearing, expressive singer's voice and a dynamic range, Yoko was selected as the featured vocalist on Geneon Japan's Para Para Max CD series. From there, she emerged as one of the anime industrys' most prolific and outstanding female singers, performing the memorable theme songs to series such as Pretear, A Little Snow Fairy Sugar, Ai Yori Aoshi, Petite Princess Yucie, Gunparade March, Ai Yori Aoshi~Enishi~ and Texhnolyze. Yoko's first solo album, "sweets," was unveiled in 2003, and had the unique distinction of being released both in Japan and the U.S. that same year to anime fans.