Hi Colors,
I have longly hesitate between your entry#13 and#15.
#15 I see that the graduation you have chose goes to less dark. I think you are really close to what I meaned.
About the headphone and the play button, what I meaned was more like a blue halo aroud the play button.
I forgot to mention that graphical element (underscore, light effet, curved and straight line, etc) around the brand name could be tried in order to givemore personnality to the brand name but I'm not sure of the result.
I would like to see If you can porpose me other fontstyle for the brand name and also other designs style for the logo may be some with bevelleing, light game and so one. one hte other you are the desing expert so I will let you follow your knoledge and experience.
I appreciate your reactivity.
François.