Bouldering and Earphones

Hello fellow Climbers ! I'm currently studying Industrial Design and I´m doing my final project about Bouldering and the use of earphones/headphones. I would appriciate if you would take a look at a survey which aims to get a broader analysis of people who do Bouldering and similar activities. Link: http://www.eSurveysPro.com/Survey.aspx?id=a9133335-3357-4387-89b3-e767627c33eb Thanks in advance to all who choose to participate !