The music, known as Think, was composed by Merv Griffin for the American television quiz show Jeopardy, which first aired in 1964. It was written to accompany the Final Jeopardy round, giving contestants thirty seconds to write down their answers while the melody counted down the time. As clips of the show spread online, the tune became shorthand for any tense pause, decision or wait, appearing in reaction videos, game streams and classroom quizzes. Its instantly recognisable rhythm keeps it useful decades later because viewers immediately understand that an answer is coming.