Rotation

Ranked by concentration, not breadth: what is breaking hard in a few markets before the world has noticed. The chart above rewards a song for spreading; this one rewards a song for not having spread yet.

1. RankTrack / ArtistConcentration
2. 01LMMi Segunda VidaLa Arrolladora Banda El Limón De Rene Camacho33.6+queue+crateBreaking ingthnmxnisv+queue+crate
3. 02OHHey Ya!Outkast33.3+queue+crateBreaking inaucagbnzus+queue+crate
4. 03DYYo te conozco :):De La Rose33.0+queue+crateBreaking inarbopepyuyve+queue+crate
5. 04Polvo RositaLenin Ramírez31.0+queue+crateBreaking inbococrgthnmxnisvus+queue+crate
6. 05AVVirgenAdolescent's Orquesta28.8+queue+crateBreaking inclcocrdoecmxpapesvve+queue+crate
7. 06WTTeenage DirtbagWheatus28.4+queue+crateBreaking inataucadegbnzza+queue+crate
8. 07TPPa' Que RetozenTego Calderón28.1+queue+crateBreaking incoecgthnnipesvve+queue+crate
9. 08MorenaNeton Vega27.9+queue+crateBreaking ingthnmxnisv+queue+crate
10. 09FRI(END)SV27.2+queue+crateBreaking inbyesfihkmvmyphth+queue+crate
11. 10Me Hace Daño VerteFresto Music25.2+queue+crateBreaking incocrecpa+queue+crate
12. 11TSSomething Just Like ThisThe Chainsmokers24.7+queue+crateBreaking inaeaubechcoglobalhknzsesgtw+queue+crate
13. 12Fast CarLuke Combs24.3+queue+crateBreaking inaucafmienzusworld+queue+crate

Ranked by movement weighted against the age of the recording. A new single climbing is what new singles do; a 1981 record reversing its trajectory is an event, and something caused it. The chart above has no notion of age and structurally cannot tell those apart. The record also has to have gone somewhere: one charting every day is holding, not returning.

1. RankTrack / ArtistRevival
2. 01Have You Ever Seen The RainCreedence Clearwater Revival73.2+queue+craterecorded 1970, 56 years ago and climbing again+queue+crate
3. 02Thunderstruck (Official Video)AC/DC67.6+queue+craterecorded 1990, 36 years ago and climbing again+queue+crate
4. 03Billie JeanMichael Jackson66.8+queue+craterecorded 1999, 27 years ago and climbing again+queue+crate
5. 04AfricaToto66.4+queue+craterecorded 1998, 28 years ago and climbing again+queue+crate
6. 05Don't Stop Believin'Journey62.5+queue+craterecorded 1981, 45 years ago and climbing again+queue+crate
7. 06Your LoveThe Outfield61.6+queue+craterecorded 1985, 41 years ago and climbing again+queue+crate
8. 07Beat ItMichael Jackson61.3+queue+craterecorded 1999, 27 years ago and climbing again+queue+crate
9. 08Beauty And A BeatJustin Bieber60.2+queue+craterecorded 2012, 14 years ago+queue+crate
10. 09Sultans Of SwingDire Straits58.5+queue+craterecorded 1996, 30 years ago and climbing again+queue+crate
11. 10CreepRadiohead58.1+queue+craterecorded 1992, 34 years ago and climbing again+queue+crate
12. 11Down UnderMen At Work55.0+queue+craterecorded 1981, 45 years ago and climbing again+queue+crate
13. 12Lush Life (Official Video)Zara Larsson53.7+queue+craterecorded 2015, 11 years ago+queue+crate

Ranked by how many markets are asking what a song is. Shazam is a chart of NOT KNOWING: every row is somebody who heard something and had to ask. It moves on the day of the event rather than two days later, which makes it the earliest signal here.

Nobody was asking about anything new on this day, at least not in enough places to mean it.