I got my iPhone 5 in early October. I have probably used my EarPods everyday since then. Just recently the left earpod has lost it's bass and is much softer than the right. The weird thing is that it this only happens when I start listening to music. After listening to half a song or so, the left earbud is almost the same volume as the right but noticeably softer. And, sometimes it will go back to no bass and very soft. Anyone experience this? Looking for a solution.