A growing number of organizations are moving towards more open and collaborative workplaces. In these offices workers share a common open space, often with flexible seating based on activities, so called activity-based offices. Most problems in these workplaces are related to sound. Thus, the question of how to design suitable acoustic environments, supporting both collaborative and individual work, has emerged. Noise-reduction approaches do not suffice. In this study we explored the possibility of adding context-sensitive, activity-based sound environments to enhance the office workplace. For this purpose, we developed the “sound bubble,” a prototype for individual work, sonically immersing the listener and generating a sensation of an encapsulating sonic environment. A total of 43 test subjects participated in an experience-based test using the sound bubble prototype while conducting self-selected, ordinary work tasks in their office landscape. Their behaviors during the test were observed and documented. All participants took a post-experience questionnaire about experiences working in the sound bubble, and two subjects were interviewed. The responses show that the sound bubble can enhance auditory work conditions for individual work that demands concentration.