Well, I can give you a little window into part of one of them: here are two videos from the 2011 Winter Solstice Celebration at the Unitarian Universalist Church of Indianapolis!
The first video includes parts of "Imani," by Rachael A. K. Hazen, and "We've Got the Power," a traditional song from South Africa:
The second video includes the grounding and centering from the Narration, co-written by Julie Forest Middleton and Stasa Morgan-Appel:
Excerpted from a presentation of A Winter Solstice Singing Ritual, (c) 2002 Julie Forest Middleton and Stasa Morgan-Appel. For more information, click here.