We have a customer that has brought us a box full of PCB projects he wanted building that he felt were beyond him soldering. The first one is the Black Polivoks VCF V2 which is an authentic sounding emulations of the famous Russian synth the Formanta Radio Factory Polivoks according to their website.
Heres a link to what it sounds like https://www.youtube.com/watch?v=YjyYaZTVap8
The board came to us completely bare, all the components were formed, soldered onto the board and finally all cleaned off. Hopefully we will get some feedback (no pun intended) from our customer as to how it works.