It's a major development. Olivia Ridrigo Adrian Martin Trending on Billboard Given its sound, the top 10 of the latest Billboard Hot 100 , dated May 2, is one of the most notable going back more than a decade. The latest chart marks the first time since at least 2013, when Hit Songs Deconstructed started tracking the weekly Hot 100’s top 10, that every song in the region has been in a major key, excluding weeks in which it was dominated by a single lead artist.  The only other all-major key top 10 during that span? Two years ago this week (May 4, 2024), Taylor Swift held the entire region with songs from her album The Tortured Poets Department . (Note that this data excludes weeks with holiday songs in the chart’s top 10.) The popularity of major keys on the newest Hot 100 is due, in part, to the top 10’s genre makeup: pop (60%), country (20%) and R&B/soul (20%).…