[goodear]

Some performers lately are wearing non-traditional concert attire. Can anyone look at the attached photo and tell me what kind of shirt he is wearing? Thanks.

 

[Searching_Best_Fit]

Looks like "band collar" shirt: i.e. a shirt without the regular collar. There is another variation called "grandad collar" that is similar to this one.

https://propercloth.com/collar-styles/band-collar

https://propercloth.com/collar-styles

Hope that helps.