To promote the RC-505MKII Loop Station, BOSS collaborated with renowned beatboxer and music producer SO-SO to create an original tribute to Tokyo’s Yamanote Line. Stopping at each of the 30 neighborhoods along the iconic city loop, SO-SO recorded ambient sounds and street life, layering them into a full-length beatbox album. The compositions were shared via digital platforms and brought to life through live performances and QR-coded tissue giveaways handed out by SO-SO lookalikes at key stations. The project offered a new way to experience Tokyo’s urban identity—through sound.