They are often seen as "experimental" instruments, being less established than electric guitar or bass.

Sometimes these sculptures function as an experimental musical instrument during performances.

He also created a series of experimental musical instruments.

Depending on what sense is being tested an experimenter has many experimental instruments to choose from to use in their experiment.

Some builders are focused on a more artistic approach and develop experimental musical instruments, often meant for individual playing styles developed by the builder himself.

For this music they both developed a group of experimental musical instruments.

From 1964-68 some 300 experimental instruments were produced.

The school hosts a physics museum, containing examples of antique experimental instruments.

It is widely seen as a short-lived experimental instrument.

Unusually, he had thoroughly worked out the theory of this invention before making any experimental instrument, having explained the idea in 1850.