Just weeks before Destiny launched I had an experience like this in BF:4. I had just unlocked the "Turn Around" achievement and started singing an 80's song that says the same thing. One by one my squad kept leaving and I had no idea what would encourage them to leave a game we were winning. Eventually I realized why...I had not muted my Mic and was singing to an unwilling audience. It absolutely didn't help that I am an awful singer. I immediately left the match when I realized what happened and Battlefield just hasn't been the same since. However, I did learn a valuable lesson about microphone etiquette.