Thanks, Hjalmarg1, and Click!
@Hjalmarg1: He is blinder than a bat, but he has such charisma and presence on stage. One have to admire him, and his singing - there's so much blues in his voice.
@Click: I see what you mean. I like the first one too if I see to the overall mood and such. But I hate how off the focus is on that Sigma - it all looks reasonably good at the point when it's taken, but as soon as I view it on the big screen at home it falls to pieces. Nothing can change that in post.
I wanted to get a few shallow DOF shots where the stage lights could paint an interesting background, and I could play with the shutter times to get various amounts of movement while instruments were played and performers danced.
Edit: Oops! That first one wasn't taken with the Sigma. I haven't posted them in the order I shot them. Used the Sigma for the 1st hour or so, then the rest was with the 70-200. I'm confusing myself...