borneoman: I sure am happy that he decided to do "Sand"!
as for "Baby Sister", he started singing it with no introduction so I don't think it was requested.
with "Back to Her Man", he told the audience how he had written the song, elaborated on how he had started singing it, and then he began singing. there were people who joined him when he sang "Volcano" (there's a video from someone who joined the group who sang with him:
http://www.youtube.com/watch?v=UkSYk24yt0Y. plus this video of "The Box"/"Wild and Free":
http://www.youtube.com/watch?v=Sufz-nIM8Ik). embedding isn't working for me, so I put up links instead.
plus, here are a couple of instagram pictures from another person in audience:
http://instagram.com/p/OuT_uqr0YB/
http://instagram.com/p/OuO8AuL0UX/
http://instagram.com/p/OuP0ynL0VI/