since it's finally cool enough to turn off the constant roar of the air conditioner:
A frantically ringing church bell.
A ship's horn (I'm miles from the river).
A live band playing Bel Biv Devoe's classic "Poison"
A plaintive train's whistle
A marching band's tuba heavy rendition of "Lady Marmalade"
Twelve million police sirens screaming down Canal