My favorite musical instrument

Handpan is a term for a group of musical instruments resulting from a growing worldwide interest in the Hang, an instrument invented and built by the company PANArt Hangbau AG.

Properties adopted from the Hang by most handpans are the basic form consisting of two metal half-shells glued together, a center tone field surrounded by a circle of at least seven tone fields on the upper side and an opening in the bottom side. Differences as compared to the Hang are the used materials, the manufacturing processes of the raw forms, the shaping of the tone fields and the tuning methods. Some handpans are also different from the basic tone field layout of the Hang.
History
The term handpan first appeared online in the fall of 2007 on the website of an American steelpan producer Pantheon Steel. It was used to describe its own development of a new instrument which was launched as an alternative to the Hang.
Consequently, the term found its way into discussions in the defunct Hang-Music Forum on the Internet. The successor of this forum was founded in 2009 and was called handpan.org. This way the expression handpan found wide circulation. A new generic term for this group of instruments had become necessary as PANArt had registered the name Hang as trademark for musical instruments.

The first four instruments, which are generally included by the term handpan, were Caisa by Kaisos Steel Drums (Germany, 2007), BElls by BEllart (Spain, 2009), Halo by Pantheon Steel (USA, 2009) and Spacedrum by Metal Sounds (France, 2009). Today, significantly more than 100 handpan builders have entered the market and offer instruments that vary widely in material, manufacturing techniques, shape, sound and quality.

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