HOW CAN ONE INCREASE ANY TYPE OF BRAINWAVE

Through Meditation -   The goal of many meditation practices is to increase the amount of slower brainwave patterns. Usually, after practice, meditators are able to become consciously aware in the alpha, and possibly the theta brainwave ranges. It takes a rigorous amount of meditation and dedication to become consciously aware during the delta brainwave state. After you gain a lot of meditation experience, you can eventually learn how to shift your brainwaves from the beta range, through the pleasant calmness of alpha, into the extraordinary theta range. If you get lucky, you'll eventually cultivate awareness in the delta range. Experienced meditators are able to recognize and control their state of awareness and brainwaves. Like any practice, the more you do it, the better your chances of passing through the alpha brainwave range, into theta, and from theta into the delta brainwave rhythm.   [6]
Conscious Stages

3. Effect of Music on Brainwaves

Music is known to affect different states of the human mind, for example, in calming one’s mind and leading to a blissful state. In this study, the effect of music on the states of human mind is examined by observing the changes in the alpha and beta brainwaves patterns. These changes are compared for ‘attention’ and ‘meditation’ state of mind.
Conducted studies on Music effects -