Just like most music, everyone experiences things a little differently and we all have our favorites. You will find there are different journey lengths under each category. If you find that any of the tracks are not to your liking please rate the experience low at the end.
Embedded within each track time option are several variations of the neuroacoustic track. The changes in each one are so subtle that it is hard to detect to the casually listening ear at times, however, the brain is unable to predict the patterns which allows it to stay in a state of awareness.
Because it is the sub-frequencies behind NuCalm's software that produces the effect and not necessarily the music itself - you should pick the tracks lengths that help you reach your natural endpoint. Should you find that you prefer the experience of a shorter track, but are not reaching your natural endpoint, we recommend placing that track on LOOP so that it is continuous. This will allow you to reach your natural end point.