Music use to be a very communal thing. The interactions surrounding live music can only be described as energetic, lively and soulful. Due to the mobile nature of todays people, this opportunity of music is not achieved due to headphone and other personal listening devices. SineTrack is a speaker with smart sensors that seek to change that aspect of music. It reacts to the movement across a room and only plays music when there are two parties performing actions. This is done through the use of PIR sensors that are pointed in different directions so that their field of view do not overlap. This function seeks to motivate individuals to congregate and move together. Using SineTrack, I hope to create opportunities of interaction with strangers.