Here's something that's got me wishing I had a spare 9000 Euros to spend on a new piece of music equipment, it's a Knifonium, what's a Knifonium? I hear you ask, well it's a Synthesizer that uses....wait for it.....Valves!!....25 of them as a matter of fact, and have a listen to some of the sounds it can produce electronically, this is pure real Analog Synthesis at it's finest, no digital modelling software or circuitry:
https://www.youtube.com/watch?v=4zf_d8tbhb8
A Synthesizer is an electronic musical instrument that creates and produces sounds electronically, the parts of the sound are generated electronically and are combined to create the sound we hear with our ears, the word Synthesize, or Synthesis means the combining of parts into a connected whole.