Tones and I, the Australian singer-songwriter Toni Watson, had one of the most explosive breakthroughs of the late 2010s. "Dance Monkey", released in 2019, with its yelping, unmistakable vocal, became a global juggernaut, topping charts in dozens of countries and growing into one of the most-streamed songs in history. It now sits near 3.4 billion plays.
She is an active, ambitious artist with a real catalogue, and tracks like "Fly Away" and "Never Seen the Rain" have pulled hundreds of millions of streams. By most standards that is a serious career. But "Dance Monkey" operates on a scale almost nothing else can match.
Dividing the hit by her second biggest song gives a ratio of about 6.86, comfortably past our 5.0 line. So by our measure Tones and I is a certified one-hit wonder, for now.
Hers is a verdict worth holding loosely. She is young and still releasing music, and a second breakout would change the picture quickly. For the moment, though, one of the biggest songs of its era so overshadows the rest of her work that, on the numbers, it nearly is her work.