A concert is a live musical performance
Yes it is, I love attending concerts. What all types of concerts are there?
Some can be performed by bands, some by larger orchestras.
I see! How long have people been having concerts?
bluegrass band may have the same order of program, mood, and volume—but vary in music and dress. In a similar way, a particular musician, band, or genre of music might attract concert attendees with similar dress, hairstyle, and behavior. For example, concert goers in the 1960s often had long hair (sometimes in dread lock form), sandals and inexpensive clothing made of natural fibers. Regular attendees to a concert venue might also have a recognizable style that comprises that venue's scene.
Types Recital
Film music concerts
A film music concert is an event in which all or part of a film's musical score (soundtrack) is performed live, often by a full orchestra and choir. Concerts may involve screening a film in its entirety, or a performance of several clips and may also include commentary or interviews with composers. The popularity of film music concerts has been increasing, as have the number of films available for a full orchestral performance plus screening 
Types of film music concert.
- Concert-only performance