Conversation so far:
What music has Ryuichi Sakamoto produced?
Ryuichi Sakamoto influenced and pioneered a number of electronic music genres. Merry Christmas, Mr. Lawrence (1983) marked his debut as both an actor and a film-score composer.
Did Ryuichi Sakamoto produce any other movie apart from Merry Christmas, Mr. Lawrence?
Ryuichi Sakamoto's most successful work as a film composer was The Last Emperor (1987).
Who did Ryuichi Sakamoto work with on the movie The Last Emperor?
The Last Emperor soundtrack features nine pieces composed by Ryuichi Sakamoto, five by David Byrne, and a few incidental pieces of source music.
Did Ryuichi Sakamoto's music win awards?
Ryuichi Sakamoto has won a number of awards, beginning with his score for Merry Christmas, Mr. Lawrence (1983) winning him the BAFTA Award for Best Film Music.

Question: When did he release his first album?
Self-contained rewrite: When did Ryuichi Sakamoto release his first album?