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.
Who replaced him?
guitarist and singer-songwriter Donnie Dacus.

Question: What was the first singe they had after all of this?
Self-contained rewrite: What was the first single the band Chicago had after Terry Kath died and was replaced in the band?