Composer Mike Post created the sound for the original Law & Order, which premiered in 1990, and it carried over to Special Victims Unit when the spin-off launched in 1999. The two notes traditionally mark the shift between scenes and location cards throughout each episode. Because SVU reruns and clips circulate constantly, the sting escaped the show and became a universal online shorthand for law, crime and sudden seriousness. Its brevity and familiarity keep it in constant rotation for edits, memes and parodies.