Interestingly if you are on a hardcore spiritual journey and have 8 hours to spare each day for 4 days be aware of the issues caused by being in a extended meditative state, these include...
A sense of unreality in the waking world,
Sensitivity to caffiene, Weird but true,
Sleep disorders (insomnia, but this passses after 24 hours)
Hallucinations (could be hallucinations or could be seeing dimentional shifts)
Strange powers (mostly useless ones but if you have focussed on an ability such as predicting the future you will find you are better at it!)
A feeling of conectedness
and many more.
Music is available for sale on our site and also there is the basic course for meditation on the New Meditation course page.