Conversation so far:
when did Chrisye's solo career begin?
Chrisye's tenor voice and performance on Badai Pasti Berlalu led Amin Widjaja of Musica Studios to ask him to sign with Musica.
what year was this?
In May 1978 Chrisye began work on his first album.
what is the title of this album?
Sabda Alam (Nature's Order).
what is a song from the album?
incorporating several songs by other artists and some written by himself, including the title song.
how did the album perform?
the album eventually sold 400,000 copies.
did he tour?
CANNOTANSWER.

Question: what did people think of his music?
Self-contained rewrite: what did people think of Chrisye's music?