Conversation so far:
What where there last albums?
last five studio albums Chicago VI, VII, VIII, X, and XI.
What else where they doing?
two television specials at Guercio's Caribou Ranch.
Are there any other interesting aspects about this article?
After auditioning over 30 potential replacements for Kath, Chicago decided upon guitarist and singer-songwriter Donnie Dacus.
Why did they need a replacement?
Kath died.
How did he die?
an accidental, self-inflicted gunshot wound from a gun he thought was unloaded.

Question: Who replaced him?
Self-contained rewrite: Who replaced Terry Kath in the band Chicago?