The Quarter

"Something tells me they're not looking for Survivors anymore..."

- Rochelle

The Quarter is the fourth chapter of the campaign, The Parish, in Left 4 Dead 2. This chapter has a Crescendo Event in which to get across a roof to a balcony that contains a safe room, a parade float needs to be driven to create a bridge between the roof and balcony. The float, when activated, plays a loud, cheery version of "When the Saints come marching in" that attracts the Infected. This tune replaces the usual soundtrack that plays when fighting the horde.

Strategy
During the Crescendo Event, you can skip most of the event by jumping from the platform where you cross on, and landing on the slowly moving platform and continue on the level. This can be very handy in Versus if your team follows you.