LSD has been legal in the 60ies, but the US government did not want to have loving and peaceful citizens, so they forbid LSD. Though now you can take LSD legally in form of sounds and frequencies.
This MP3 creates a similar state to LSD. Please do not use while driving.
This MP3 includes only pure frequencies in which noise has been added, without music and additional tones.
This MP3 is equally suitable for beginners and advanced.