Tones, semitones and... ¿ quarter tones ?

[Externet]

Is there somewhere an audio sample to listen, on how would a melody sound using fitted/added  'quarter-tone'  keys  ?

-Found an article about a composer trying to build a keyboard with such extra keys...-

Edited- added:  Sorry. Dumb me; should had searched for it before asking...

 

Edited February 3, 2019 by Externet

[StringJunky]

Here's another on guitar:

 

[mathematic]

Bela Bartok used quarter tones - quartets 3 onward.

[Strange]

6 hours ago, Externet said:

Is there somewhere an audio sample to listen, on how would a melody sound using fitted/added  'quarter-tone'  keys  ?

One of my favourite examples is The Don Ellis Orchestra - he had a trumpet made so he could play quarter tones. The sound just makes me smile every time. Check out Electric Bath. 

5 hours ago, StringJunky said:

Here's another on guitar:

And here is a 31 tone guitar

 

Here is a fascinating (and slightly bizarre!) documentary on microtonal music: http://thesonicsky.com/video/sonic-sky-introduction/ 

[StringJunky]

1 hour ago, Strange said:

One of my favourite examples is The Don Ellis Orchestra - he had a trumpet made so he could play quarter tones. The sound just makes me smile every time. Check out Electric Bath. 

And here is a 31 tone guitar

 

Here is a fascinating (and slightly bizarre!) documentary on microtonal music: http://thesonicsky.com/video/sonic-sky-introduction/ 

Being pretty deaf, semitones are the closest I can differentiate and even then, on the lowest string, I can only really do full tones. Quarter tones are wasted on me.

[Strange]

8 hours ago, StringJunky said:

Being pretty deaf, semitones are the closest I can differentiate and even then, on the lowest string, I can only really do full tones. Quarter tones are wasted on me.

The documentary might still be worth watching as it is very visual