How loud should the music be?
Generally as loud as you would normally hear music in your home which is between 50 and 60 decibels. A decibel is how the intensity or loudness of sound is measured. Shouting is equivalent to the sound of a motorcycle at 100 decibels, and rock concerts have been measured to around 115 decibels. Loud music has been found to negatively affect the developing baby in several different ways, lower weight at birth, defects, and others.
