Conversation so far:
What year did Lou Gramm leave Foreigner?
Gramm decided to leave the group in May 1990.
Why did Lou Gramm leave Foreigner?
Gramm announced his departure from Foreigner in May 1990 due to differences with Jones, and to focus on his solo career.
What work did Lou Gramm do as a solo?
Gramm released Ready or Not as a solo.
What year was Lou Gramm's solo Ready or Not released?
Gramm released Ready or Not in January 1987.
Did Lou Gramm do any other solo work besides Ready or Not?
Gramm followed Ready or Not with his second solo release, Long Hard Look.
What year was Lou Gramm's solo Long Hard Look released?
Gramm's solo Long Hard Look was released in October 1989.

Question: Did he ever reunite with the band?
Self-contained rewrite: Did Lou Gramm ever reunite with Foreigner?