The goal of the study is to reply some components of the study of Randall & Rickard (2016 - Reasons for personal music listening) and to investigate, how the factor “mood- congruency of music listened to” interacts with the mood of the participant and the chosen reason for listening. There are no specific studies concerning mood-congruency during mobile-listening. The hypotheses are for example “While being in negative initial mood listening of mood-incongruent music due to the reason “background music” leads to a significant enhancement of mood.” The hypotheses are all very specific concerning the reason of listening. Each participant should start movisense when he begins to listen to a song. A second questionnaire will start automatically after 3 minutes to determine to changed mood. So it will be possible to calculate the change in mood in regard to the specific reason for listening.