Two earbuds are definitely over-rated! I wasn't happy when I picked up my favorite earphones for running and realized one earbud was missing. Riley? Daisy? Diesel? ARGH! But I popped the one earbud into my left ear and headed out for an easy run anyway. It wasn't too bad; I actually kind of liked it. I could hear the music and yet at the same time hear my surroundings very clearly too. Maybe this was a blessing in disguise... Thanks kitties!