Conversation so far:
When did Yanni end his hiatus?
In 2000, after the two-year hiatus, Yanni released If I Could Tell You, his first studio album in seven years.
How did Yanni make his comeback?
In 2000, after the two-year hiatus, Yanni released If I Could Tell You, his first studio album in seven years.

Question: What type of music was this album?
Self-contained rewrite: What type of music was Yanni's comeback album?