By the way: We are also looking for non-experts and non-musicians to do this listening test! We want to get an idea of how difficult it is to differentiate between the guitar pick sounds. We compare,  thin - thick, metal - plastic, large - small, cheap - expensive ..types. The results will be published in August 2020. Anyway, at the end of the test, you will get informed, how many correct answers you have in total.