From a photographic perspective there's a couple of cardinal sins committed here. drummer wacking back of singer's head, halo behind singer (I know it's the cymbal the drummer is playing), some flying cards are distractions rather than add.
The band appears to be playing whilst the singer stands aloof and stiff in a somewhat condescending royal pose - ah but that's what singers do don't they
Having said that, the pictures are not bad, really good in fact Lighting is very well done, plenty detail retained in shadows and (most) highlights. Oops this is starting to be a photographic critique.
If the pictures convey the image the band wants to portray then you've been very successful.
Having listened to your music, which I enjoyed very much, think more dynamic for your next photo shoot. You could make the Vegas theme bigger (showgirls, neonlights, showgirls, one armed bandits, showgirls, etc,). Ok maybe just the neons, moody lighting and the singer dressed as a showgirl
just the tuppence worth of an old codger ..