Delta wave: Delta wave is a frequency of 0.5–4 Hz with links to a dreamless sleep.
Brainwaves use the latest brainwave entrainment (large-scale electrical oscillations in the brain which will naturally synchronize to the rhythm periodic external stimuli) technology combined with neuroscience and psychology.
Alpha wave: Alpha wave is at a frequency of 7–13 Hz and may encourage relaxation.
Looking at the effects of our brainwaves music using fMRI and EEG, the brain state is more active while listening to our brainwaves music than listening to other music.
Gamma wave: Gamma wave is frequency higher than 30 Hz.