The bowl begins to sing as you move the mallet around its rim. The tone continues, its character shifting with your touch. A moment later, the harp adds three distinct notes that form a short melody. Both instruments can sustain their sound, but each invites your hands and imagination into a different kind of playing.
It is worth starting the choice from what you want to do: develop one tone, sing against a stable background, lead a melody or take the instrument to classes. Below we compare playing a harp, one bowl and a set of bowls. For a particular bowl, whether metal or crystal, we will focus on what you can hear and how it feels to play.
Open video on YouTube
In this article
Where does the sound come from?
The body of a singing bowl vibrates. You can stimulate it by hitting it or moving the mallet around the edge. Sound contains more than one component, and the method of contact affects which of them you hear more clearly. Acoustic research on singing bowls describes various forms of vibrations and their contribution to the sound. Acoustical Society of America: singing bowl acoustics.
In a crystal harp, the sound sources are individual quartz tubes. Each has an assigned note, and they are all in one frame. By passing the mallet between the tubes, it is easy to arrange the order of sounds. A wet hand provides a second way to stimulate the instrument: smooth movement through the middle parts of successive horizontal tubes.
You don't have to choose an instrument based on the material alone. Two bowls can be very different in timbre, as can two harps with different scales and ranges. Listen to a specific example or a reliable recording of a model.
One bowl or the whole set?
With one bowl, you develop the sound of one item: you change the impact force, mallet contact and decay time. When it comes to a set, there is the order of pitches and the physical distance between the instruments. These are two different situations for the hands, even if all the bowls are made of the same material.
Therefore, when choosing a metal or crystal bowl, check four things on a particular piece: a gentle strike, the start of the tone by friction, its sustain and its ending. Use a mallet intended for a given bowl. Listen to whether the timbre still suits you after longer playing and whether you can comfortably repeat the gesture. The material itself will not answer these questions.
In the harp, all the tubes are already in one arrangement. You save yourself having to set up separate bowls, but you also choose a ready-made set of notes. Think about whether you care more about freely adding additional instruments or about the melody available in one frame.
Comparison in everyday playing
| Feature | Crystal harp | Singing Bowls |
|---|---|---|
| Access to notes | Several tubes in one system; easy transition to the next note | A set of notes usually requires several bowls |
| Melody | Choose the order of the tubes directly | Requires reaching between bowls of selected pitches |
| Continuity | Sustain after a strike, or repeated tones produced with a damp hand | Possibility of maintaining the tone with friction in bowls suitable for this technique |
| Hand work | One mallet, optional free-hand mute | Striking or moving the mallet around the rim; the movement depends on the bowl and the set |
| Preparation | One body and stand | One bowl or multiple instruments and pads |
| Transport | One protected instrument; size depends on the model | The number, size and way of packing bowls determine the entire luggage |
| Playing together | You need to check the notes, octaves and tuning | You need to check the notes, octaves and tuning |
The table shows differences in use. This does not mean that bowls cannot play melodies or that the harp is only used for single notes. Each of these instruments can play several roles, but some actions are simply more direct.
If you want to develop one tone
The bowl may be an interesting choice when you enjoy staying with one tonal centre for longer and watch it change under your hand. It's worth checking how easily it starts to sing and whether you can comfortably keep the mallet moving. Also try several striking forces instead of just listening to the loudest note.
On the harp you can also stick to one note. However, striking it again will be a clear follow-up gesture. You can make an advantage of it: note, silence, answer with voice, come back. This is a different way of keeping time than constantly maintaining the tone.
If you want to make melodies
The harp puts several notes within one hand's reach. On Chakra C you'll find eight tubes making up the full octave of C major, and on Planetary C you'll find fifteen notes from C4 to C6. You can repeat the motif in a higher octave, or separate the lower note from the response above it.
A set of bowls also allows you to build phrases, but it is worth checking the exact pitches and comfort of setting before purchasing. The time it takes to move your hand between the instruments also counts. For the melody you want to sing, first write down the notes you need; then you can more easily see what is missing in a given set.
Don't assume that eight tubes automatically "replace eight bowls." In addition to the number of notes, the timbre, the way the sound is sustained, the register and the technique are important. The harp can take over some of the set's functions and leave others to the bowls.
Harp and bowl together: an easy way to try it for the first time
Start with one bowl and one harp note that matches it. Check not only the letter, but also the octave and the pitch reference point. Instruments described as C may have different frequencies, and the label 432 Hz does not mean that they contain the same note.
Play the bowl and let it resound. Add a single harp note and then wait. Do both sounds remain legible? Is there a pulsing that you like, or do you just want to separate the sounds? Only after this attempt add the second and third notes.
For example, with a properly selected C bowl, you can check the phrase C, E, G, C on Chakra C. If the whole thing gets too dense, play the harp only after the bowl has quieted down. Instruments can respond to each other sequentially; they don't have to sound together all the time.
What to check before choosing?
Listen to the instrument quietly and a little more loudly. Pay attention to the onset of the tone, how long you can comfortably sustain it, and how it ends. If you plan to play with your voice, sing a short fragment. Recording just the instrument won't immediately show where your voice feels best.
Also think about a typical working day. Do you set up the instruments once in a fixed room or move them between three rooms? How much space does the entire set with cases take up? For harps, compare the smaller Lotus, eight-tube models, and the larger Planetary C for actual range and transport.
In the Sacred Forest app you can try out harp note patterns before choosing a model. Treat it as a musical sketch, then listen to the recording of the instrument and check its parameters.
Where to start if you like both?
Choose the activity that you are most drawn to. If you want to tell stories in short melodies, start with the harp. If you are fascinated by the long development of tone under the movement of your hand, get to know one bowl well. You can later create a dialogue with the second instrument.
The most convincing attempt is simple: a few minutes of playing alone, a short song, and a moment of listening from a distance. After such an attempt, you often know much more than after reading a list of adjectives describing the sound.