In one of the studies on hypertensive individuals, there was a significant decrease in both systolic (15.9 mm Hg reduction) and diastolic BP (9 mm Hg) after weekly music therapy sessions for duration of 12 weeks. The control group did not show significant changes (Márquez-Celedonio, 2009). Among hypertensives, there was a significant reduction in BP after using a device which guides the user towards slow and regular breathing using musical sound patterns. The device was used for 10 minutes daily at home for 8 weeks. The control group in this study were given a walkman with which patients listened to quiet music. Treatment with the device reduced systolic BP, diastolic BP and Mean arterial pressure (MAP) by 15.2,10.0 and 11.7 mm Hg respectively, as compared to 11.3, 5.6 and 7.5 mm Hg with the Walkman (Schein, 2001). Another study evaluated the short and long-term effects of audio relaxation programs for BP reduction in older adults. The subjects listened to a 12-minute audio relaxation program. The reduction in systolic and diastolic BP was statistically and clinically significant (Tang, 1996).