There exist various COPs with many topics such as hobbies, learning and culture in Sandoll. Among them, there is an office-worker band. An in-company band of Sandoll named ‘playing-for-fun band’ invited co-workers and gave performances. They prepared for the performance, practicing band playing together in between times after work for last a year. People said that they were impressed by their wonderful skills for a band that the band members do as a hobby.