Conversation so far:
What did Gregg Allman do in his final years?
After the dissolution of the Allman Brothers, Gregg Allman kept busy performing music with his solo band, releasing the live album Gregg Allman Live: Back to Macon, GA in 2015
What was the name of Gregg Allman's solo band?
How did the album, Gregg Allman Live: Back to Macon, GA, do?
The album, Gregg Allman Live: Back to Macon, GA, received critical acclaim
Was the album, Gregg Allman Live: Back to Macon, GA, popular?
Did Gregg Allman tour with his last album, Southern Blood?
Gregg Allman's last concert took place in Atlanta at his own Laid Back Festival along with ZZ Top at Lakewood Amphitheatre on October 29, 2016

Question: how many people attended
Self-contained rewrite: How many people attended the Laid Back Festival on October 29, 2016?