Design process

About Bellyhorn

Bellyhorn is an instrument to sing through. It is a big, organic-shaped, tangible and almost beastly instrument. It consists of a horn, a trunk and a ‘belly’. If you sing into the horn, sub-bass tones will sound from the instrument. The further you put your head into the horn, the louder you’ll play its tone. If you lift the horn, you also lift the pitch of the tone. When you sit or lie down on the Belllyhorn (as a listener or as a player), you can feel these deep bass tones through all of your body.

Dianne created the Bellyhorn during her residency at Gaudeamus Muziekweek at Vechtclub XL, a creative breeding ground in Utrecht, in cooperation with four designers (David Menting, Daniëlle van Lunteren, Toon Welling en Quinten Swagerman). 

This page contains a glimpse of the creative process.

Bellyhorn, Pulseyarn – Future Folk Instruments from Quinten Swagerman on Vimeo.

This is how Bellyhorn sounds

First design drafts:


Wollen koker/Woolen Funnel/Bellyhorn

How it works:

  • Within the belly there’s a tone/drone
  • You can influence the tone by singing through it
  • You can influence pitch by lifting the horn
  • Loudness of singing and how far your head is positioned in the horn defines final volume

More design sketches:

IMAG0642 IMG-20160203-WA0002 IMG-20160203-WA0003 IMG-20160203-WA0004 IMG-20160203-WA0005 IMG-20160203-WA0006

See also website Vechtclub XL


Bellyhorn prototype:


Photo by Marjolein Sponselee @ Rood Noot. With Peter Kolpa and Leela May Stockholm