I started noticing effects from the very first listen. However I was in a meditative state (theta brain wave) tuning in to the energies with all my attention. This is what I call a quality session with a field.
In my first listen with VoC I felt a vortex which started to form from my root Chakra and grew to encompass my entire body and aura. Cleansing and purifying every cell of my body. After i felt lighter.
If you need help getting into the theta brain wave, there is a field for it on gumroad.com
Otherwise if you are just listening without being in meditation then it may take longer for your subconscious mind to integrate it and allow you to benefit.