Fuser - Music & Ambient Sound Mixer for Headphones / Adds Natural Sounds & Amplifies Noises Around You with Your Music to Increase Awareness / Engage with Others While Never Missing a Beat Increase your awareness of traffic around you while jogging outside Listen to music at work and still engage with co-workers Take a road trip and not ignore others in the car Relax at the beach with your music and still hear the waves crash The possibilities are endless.