krakow, poland - september 20, 2014: abstract background image of an artist from a rock band music concert in front of crowd

2014 abstract air amusement applause arm artist audience background band blue celebration cheering club concert crowd dance enjoy entertainment event fan festival fog front fun guitar hand happy headbang human image krakow light live loud metal mic music night nightlife party people perform performance poland pop rock september show silhouette smoke sound spotlight stage techno thrash young