Birthday Gift Idea For A Teenager

I have been invited to a birthday party which will be held in two weeks’ time.   It is the birthday of my friend’s 16 year old son.  Been shopping around for a birthday gift and I was told that he is very into music.  He is a good guitar player so I thought perhaps I should get him this cool-looking Ecko Unlimited Impact Headphone from Iwantoneofthose.com and also a guitar pick holder.