vibrant music background with layered circles

music background design abstract colorful pattern circles layers gradient modern poster template digital art geometric creative texture shape purple pink blue backgrounds wallpaper flyer cover party event concert festival musicposter musicevent electronicmusic musicbackground musictheme musicbackgrounds musiceventposter musicparty musicbackgrounddesign musictemplate musicabstract musicart musicillustration musicpattern musicdigital musicgeometric musicshape