Original sentence: ECS occupies sections 121-123 at Qwest Field, the home ground of the Sounders.Songs are lead by a capo with the aid of a megaphone.These sections are general admission sections located behind the goal at the south end of Qwest Field, also known as The Brougham End
Edited sentence: ECS occupies sections 121–123 at Qwest Field, the home ground of the Sounders.Songs are led by a capo with the aid of a megaphone.These sections are general-admission sections located behind the goal at the south end of Qwest Field, also known as The Brougham End