Complex sentence: After a long, drawn-out light and fog show with the first track from Ridin' the Storm Out playing in the background, a sign revealing the name to be "Bureau Valley High School" was greeted positively by attendees.
Split into simpler sentences: After a long, drawn-out light and fog show with the first track from Ridin' the Storm Out playing in the background. A sign revealing the name to be "Bureau Valley High School" was greeted positively by attendees.