Find the perfect mix of background noise to help you relax, study, work or sleep. A Soft Murmur is the perfect productivity app to help you wash away distractions. For any problems or support, please email gabriel@asoftmurmur. Com. Upgrade to Marshmallow 6. 0. 1. Android Marshmallow 6. 0. 0 has problems when all sounds are unlocked. This is fixed in Marshmallow 6. 0.