A man wakes up in a strange dark place and starts asking questions. Good for haunted house scene possibly. . . Use this accompanied quickly by the sound of a chainsaw maybe?.
A man singing with the sounds of the on coming train/ subway car, and mumbling along with the naturally amplified sound of the over head fluorescent lamps. .
Made with audacity. 3 cars in one race, one of them spins out and crashes into a wall. 911 was called, the 2 other cars pulled over to help the crashed driver.