The length of this study was extended to eight weeks mainly because we wanted to address the accumulative effect of music listening for older people on depression levels. The results from this study pointed towards that music has a dose–response relationship in GDS when significant difference was found after week 6. A systematic review was conducted by Gold et al. (2009) on the dose–response of music on psychiatric patients, and they suggested that there was a significant dose–effect relationship in music therapy for depression levels on psychiatric patients. From our result, the time taken for depression scores in the music group to reach a consistent statistically significant reduction level was six weeks.