The band Latigo during a break. They were performing for the WCO Little Red Schoolhouse spring event. The Wickenberg Cultural Organization operates the school house and makes sure kids in the area get music education.
This is an excellent "almost candid"; three of the four being completely unaware of you, contrasting against just the one who's completely engaged with your shot. I think that the nice, tight crop works well as well; it really brings the focus onto the four subjects with no distractions.