The tape has to be played extremely loud:

Behind the Dog
Put That Toy Up
Athletic Club
Bel Air Nerves
The Citizens Need No Warning
Waves Of Chloroform
Soukesian The Psychic
The Man who Liked Dogs
Twenty-Five Automatic
She Jumped In The Bay This Afternoon
A Great Lung Full of Smoke
Angel Wasn't A Good Housekeeper
Babe Liked Sue, Vassos Liked Sue, Sue liked Babe
Behind The Dog