Whistling noise you hear in dutch house music, and some electro. When you hear this noise you know the party is poppin.
Afrojack, Laidback Luke, Dj Chuckie, Swedish House Mafia, etc.
Johnny:" I am at the EDC and Afrojack is spinning."
Sparkles: "omg is he playing take over control?"
Johnny: "Yea, hes got that rave whistle playin' and the party is POPPIN!"