You may activate the seven chakra centers by crystal bowl sounds. Time lenght is 15 minutes. It may be better to meditate when your consciousness are clear in calm conditions around. If you are not able to turn up the volume, use your headset or headphones.
I made this video with sound extracting 3rd song “Chakra Mediation” in album title “Crystal Voices_The Harmonic Vibrations of Crystal Singing Bowls ”