Guča is in Serbia.
Guča is a small town in Central Serbia most famous for its annually held Trumpet Festival early August.
Guča is located at the intersection of 2 small roads (117 and 227) few kilometres away from Čačak, which is about 3 hours away from Belgrade reachable via E-763.
Guča is a very small town, so everything is in walking distance.
The Guča Trumpet Festival (official website) is a competition of trumpet players an orchestras and attracts hundreds of thousands visitors each year, both from Serbia and abroad. The festival features local Brass bands as well as some international artists.
The festival itself is free, but there is a 1000 Dinar (or 10€) fee for entering the town by car.
As of 2012, the festival lasts 7 days (Monday - Sunday), the main competition and artistic acts start on Thursday. The competition and most acts are held at the stadium.