If you start hearing a rattling sound, slow down and apply more pressure. The mallet loosely vibrating against the metal (jumping on-and-off) causes that rattling sound. It takes a little pressure to maintain even friction with the metal as it vibrates back and forth. The rattle is usually heard in the same area when playing the rim of the singing bowl. It happens because the pressure in that area is a little loose. The vibration can not be built up to a constant (steady) intensity if the singing bowl is rumbling.

A common misconception is that Himalayan singing bowls are made from a special "sacred seven metal" alloy.

This is a false myth that has been perpetuated over the internet. Many people believe the seven metal myths. However, there is no truth to it. Singing bowls were never made from seven metals. In testing hundreds of bowls, we have never found the mythical seven metals. We have found only bell metal bronze or the cheap brass alternative.

There are many "authorities" in sound healing community and some of them are misleading the subject by spreading unreliable teachings about the notes and chakras. I know that some of these teachers were misled themselves and they strongly believe that there is nothing wrong with the knowledge they teach. They have the best intentions, projecting so much love and care, but yet, if you choose to blindly follow the path they offer, will you discover the truth?  

Unfortunately, there are also fake gurus and I will allow myself to say BE AWARE OF THE SPIRITUAL FRAUD!

The late '80s brought to the New Age community a very interesting instrument with angelic tone - crystal singing bowl.  

Crystal singing bowls are called "Quartz Crucibles" and they originated in the solar industry.

The crystal bowls are very popular these days and are a really good sounding instrument. Not many sound practitioners know how these bowls are being manufactured.

It's very common to see sound healing practitioners using three singing bowls set placed around the head area. Left, right and crown. This is called A HEADSET. 

Does it have something to do with the Third Eye Chakra and the Crown Chakra? The answer is -  maybe, but there is something else, that is more obvious than the speculative assumptions that it is somewhat good for chakras.

Although little is known about how singing bowls were used in the past, modern practitioners of sound healing are developing new skills and reinventing techniques of utilizing singing bowls for balancing and harmonization. There are many skeptical opinions, but if you know what to do with the bowl - you'll see that it works!

There are so many different speculations about the original purpose of singing bowls. And you may ask what is a Tibetan singing bowl used for? The majority of experts claim that they were used as utilitarian vessels for eating, drinking, and storing food. Also, bowls were, and still are, being used for collecting donations. However, the sound properties of singing bowls have been acknowledged for centuries. The variety of shapes of antique sound healing bowls indicates that acoustic properties were of primary importance.

Singing bowls could be brought to hospitals and rehabilitation centers. For more than four years now I've been bringing sound therapy to a nursing home and rehabilitation center in Manhattan. Although I introduced myself as a musician – and that's how I was hired – the management is calling my program “sound healing”. Most likely I would not have been hired if I called myself a sound healer. My agenda was to bring the art of conscious listening and sound meditation to the elders. I knew, however, that the sound healing modality had no support or even recognition 

In this article, we will talk about the uniqueness of Himalayan Singing Bowls (also known as Tibetan Singing Bowls and Sound Healing Bowls). We will learn what makes the sound of singing bowls so unique and why listening to these instruments can be healing.

This article presents interesting facts about the imprint of harmony within the timbre. We will also look deeper into the acoustic phenomenon such as dissonance, and brainwave entrainment.

Oftentimes sound healing or sound bath participants feel overwhelmed and uncomfortable by sounds that may be unintended by the sound practitioner, thus resulting in a participant’s aversion to continuing with further sessions.  Without the right tools and playing techniques, singing bowls can emit unwanted buzzing, loud or piercing pitches, or even harsh percussive sounds.