Longest concert by multiple artists
- AJ's Cafe
- United States Ferndale
The longest concert by multiple artists lasted for 360 hours and was conducted at AJ's Music Cafe, Ferndale, Michigan, USA from 19 March 2011 to 3 April 2011. This is the third time AJ's Music Cafe has held and broken the record organized by Allen O'Neil, after previously holding the record in 2009 and 2010. The concert took place from 5 p.m. on 19 March 2011 to 5 p.m. on 3 April 2011. Artists at the concert performed songs from genres including Motown, blues and rock ’n’ roll.