There are so many different kinds of concerts and so many different types of people who attend concerts, that an answer must be very general.
It is safe to assume that people who are attending a concert do so to enjoy the music so the interaction between people will be before, after, and at intermissions. Since concerts are most often attended by people who want to be there, the interaction is usually pleasant, usually discussions of the music or artists or light conversation that can easily be interrupted to pay attention to the performance. Interaction is usually light; you will seldom find people at concerts discussing business or hashing out controversies. There are some people who attend concerts to see and be seen, for a social networking experience. You can identify this type of concert goer because they are paying attention to everything but the concert or the people they are with.
The noun for 'people attending a concert' is attendees.The collective noun for people attending a concert is an audience of people.
An audience Concert goers
how people in Bolivia interact with their enviroment
People interact by talking tl each other
The same way that other people interact with other people.
People at a concert are called several things:crowdaudienceconcertgoersfans
There were 250,000 people at his Kebworth concert.
If I have 2000 people at a concert how much space do I need
Blacksmiths interact with people who own horses and carriages .
A concert refers to the performance of music before a group of people.
young people could interact without supervision
the crowd