I am not really sure if this goes here but all of the instrument forums are focused more on guitar and bass than anything else so if anyone has a better idea just let me know and I will move it.

Can anyone recommend a keyboard?

Basically what I am looking for is anything that will be able to do a good job of emulating the sound of a mellotron (the string-ish sounding thing on a lot of early King Crimson, for those who don't know).

Here is a clip of the sort of sound I am looking for

what would make a good amp?