Sound Surround by masafumi ishikawa from usa

We don't like too much kindness even if it's expected appropriately. That might be just interference. On the other hand, the activity anticipated little in advance is more comfortable.

"Sound Surround" anticipates always you getting closer quietly. It is a humble expectation.

Once you having a smartphone approach the each territory of "Sound Surround", they'll start automatically play the music which you have listened recently.
When you go to outside, it'll stop naturally.