In the 1940s, quartets began to incorporate guitars in an effort to compete with other touring quartet groups during quartet battles. These changes were influenced by the changes that were also present in Black churches. The transitional period of jubilee quartets allowed the groups to try out different musical techniques in order to distinguish themselves and build a fan base especially as battling and touring became popular.
Below you can hear the different styles of jubilee quartet music before, during, and after the transitional period.