want to listen to music during class put cant hide the headphones good.well i got the answer for you .this is another one of my friends ideas but i embelished it alittle
-a hoodie double layer hood
-supplies tape prefurably the color of yor hoodie(color optional)
-knife or scissors
cut a hole in the inside of your center pocket slide almost all the cord in the hole then tape it closed.leave the pin out . then turn the hoodie inside out and run the wire up to the hood . pull on the pin end till were the headphones split is taught and at the head hole.