As I have mentioned in the past, I will see Night Beats at any given opportunity. They are one of the best live acts out there right now and absolute gunslingers onstage. I saw them three times last year (once in Chicago, once in Austin, once in San Marcos), and their newest album, Who Sold My Generation, was one of my top albums of 2016.
They always put on a good show of psychedelic R&B, and seeing them in probably the smallest venue so far (for me, at least) at VIVA PHX is going to be a treat.
Keep your mind open.