Some of the events that Aya has appeared in during the year 1998 are as follows.

1998 03.15	Hisakawa Aya concert tour in Osaka
1998 03.29	Hisakawa Aya concert tour in Akasaka Blitz
1998 04.04	Geo Breeders event in Tokyo
1998 04.11	Geo Breeders event in Osaka
1998 04.12	Geo Breeders event in Nagoya
1998 07.01	Shibuya de Chu recording
1998 07.19	Pioneer LDC Matsuri Summer in Osaka
1998 08.02	Hisakawa Aya live in Akasaka Blitz
1998 08.22	Shiny Night public recording
1998 10.04	Anime Complex event
1998 12.06	Cyber Formula event
1998 12.23	Aoni Museum Xmas Show