A great resource of free vector that related with music posted on Airopia.org , it contains about 14 vector images. There is some fresh and cool colourful illustration that contains some of music element i.e : guitar, disco lamp, equalizer signal, headphone, soundsystem, round table dj also a dj girl that playin’ rountable. I think this is great resource for your music/band poster project 
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Visit : http://airopia.org/14-free-vector-musical-graphics..
