The Los Angeles show was a benefit for the Jail Guitar Doors foundation, which rehabilitates prisoners using musical instruments. The second annual benefit also featured Ben Harper, Jackson Browne, and White Fence, among others.
Morello shared the Instagram below to mark the occasion:
Morello is currently working on a Jimi Hendrix-inspired solo album, which he plans to release under his own name. His last release as the Nightwatchman came with 2011’s World Wide Rebel Songs.
Check out Billboard’s roundup of musician reactions to see how Morello and others -- such as J. Cole, Killer Mike, and John Legend -- responded to the events in Ferguson, Mo.