Step 1 : Introduction to the question "Which song made history as the very first No. 1 on the Billboard Hot 100?"
...When the Billboard Hot 100 debuted on August 4, 1958, it marked a major turning point in how popular music success was measured in the United States. Prior to its creation, Billboard maintained several separate charts that tracked sales, radio airplay, and jukebox popularity independently. The Hot 100 unified these metrics into a single, comprehensive ranking designed to reflect a song’s overall commercial and cultural impact. The very first song to top this new chart was “Poor Little Fool” by Ricky Nelson, making it the inaugural No. 1 hit in Hot 100 history.
