~ From 1987 to 1988, he was bassist for the band PARANOIA. He was part of Media Youth for a brief time around 1990 before joining Majestic Isabelle. He had been bassist for this band during the Extasy Summit '91. After that, he joined Media Youth again and left the band definitely on June '92.
~ Heath joined X Japan in 1992, 10 months after Taiji left the group. (ex-bassist)
~ As you may had read, the first meeting of Heath and X was apparently uneasy (I still don't know any details)
~ His solo career starts around 1994. Since then, he released 2 albums and few singles. Of course he is the one who plays bass, but he is also singer.
~ Heath has gone on to a successful solo career, lending his songs to such popular shows as the anime 'Detective Boy Conan'.
~ Currently, Heath possess his own record company, M Record, along with his brother.