Acappella's fan base steadily grew through the 1980s as the group experienced many lineup changes and constantly experimented with fresh new sounds. The landmark album, "Sweet Fellowship" (1988), ushered in one of the most significant developments in the group's membership and style. Lancaster stepped out of the group as lead singer to focus on the role of producer and manager. The group continued to change after that, developing a unique sound that has been mimicked by countless groups around the world.