This is a demo for Tonebytes Vocotron – a $34.95 VST instrument plug-in for Windows that combines the functions of a sampler and vocoder.

Vocotron’s keyboard is divided into two key zones, like on the classic Mellotron and Chamberlin “samplers”. However, the zone’s functions are slightly different: the left side reproduces samples and is a modulator for the integrated vocoder, and the right side sets the tone, it is the carrier for the vocoder.

To extract the sound from Vocotron, pick a chord on the right side of the keyboard, and then start pressing keys in the sample zone. By changing the chords you can get the sound of your waves in different tonalities.

See the site for more details and audio demos.