Conversation so far:
Where did Gregg Allman tour?
The band continued to tour throughout the 2000s, remaining a top touring act, regularly attracting more than 20,000 fans.
Who did they tour with?
In 2014, the Allman Brothers Band performed their final concerts, as Haynes and Derek Trucks desired to depart the group.
Did they record any albums?
band released their final studio album, Hittin' the Note (2003).

Question: What kind of health problems did he have?
Self-contained rewrite: What kind of health problems did Gregg Allman have?