Now the Lumatone

https://www.lumatone.io/

Mike Battaglia plays Scarborough Fair in 31-tone equal temperament

https://www.youtube.com/watch?v=HJKB1_gvhLE

This problem has an established name and is widely studied in economics and mechanism design: the free-rider problem

https://en.wikipedia.org/wiki/Free-rider_problem

Full title: There is no evidence that time spent on social media is correlated with adolescent mental health problems: Findings from a meta-analysis.