The M Countdown Chart is a record chart on the South Korean Mnet television music program M Countdown. Every week, the show awards the best-performing single on the chart in the country during its live broadcast.
In 2015, 30 singles ranked number one on the chart and 25 music acts were awarded first-place trophies. Four songs collected trophies for three weeks and achieved a triple crown: "Sniper" by Shinhwa, "Call Me Baby" by Exo, "Lion Heart" by Girls' Generation and "I" by Taeyeon. No release for the year earned a perfect score, but "Lion Heart" acquired the highest point total on the September 3 broadcast with a score of 10,988.
Scoring system February 27, 2014–June 4, 2015 Songs that appeared on the show from January 1–June 4 were scored based on a combination of digital single sales (50%), album sales (10%), social media performance (official YouTube music video views and SNS buzz: 10%), preference points (global fan votes and age range preference: 10%), Mnet's broadcast score (10%), and SMS votes (10%), for a total of 11,000 points.
June 11, 2015–April 12, 2018 Mnet changed its scoring system effective the June 11 broadcast. Digital sales still accounted for 50% of a song's score, but points for album sales and social media performance were increased to 15% each. The popularity, broadcast, and voting percentages remained unchanged. No song achieved a perfect score under either system for the year.
Chart history +Key Triple Crown Highest score in 2015 — No show was held Episode Date Artist Song Points — colspan=3 407 EXID "Up & Down" rowspan=2 408 409 Jonghyun "Déjà-Boo" 6,995 410 Mad Clown "Fire" 7,409 411 Davichi "Cry Again" 7,238 412 Infinite H "Pretty" 7,209 — 4Minute "Crazy" 413 8,636 414 VIXX "Love Equation" 8,403 415 Shinhwa "Sniper" 416 7,965 417 8,554 418 Red Velvet "Ice Cream Cake" 8,069 419 Exo "Call Me Baby" 7,745 420 7,756 421 colspan="3" 422 Exo "Call Me Baby" 7,652 423 BTS "I Need U" 6,876 424 Big Bang "Loser" 9,669 425 8,188 426 Shinee "View" 9,037 427 9,762 428 BigBang "Bang Bang Bang" 9,669 429 Exo "Love Me Right" 9,238 430 BigBang "Bang Bang Bang" 9,124 431 Sistar "Shake It" 432 BigBang "Sober" 8,487 433 Girls' Generation "Party" 10,654 434 Infinite "Bad" 8,851 435 Apink "Remember" 9,244 436 Beast "YeY" 437 colspan=3 438 colspan="3" 439 GD & TOP "Zutter" 10,741 440 Girls' Generation "Lion Heart" 9,868 441 10,988 442 10,961 443 Red Velvet "Dumb Dumb" 10,085 444 445 Soyou & Kwon Jeong Yeol "Lean On Me" 7,137 446 iKon "Rhythm Ta" 7,068 447 Taeyeon "I" 10,929 448 9,541 449 10,093 450 f(x) "4 Walls" 10,688 — colspan=3 451 f(x) "4 Walls" rowspan=2 452 Dynamic Duo "Jam" — colspan=3 rowspan=2 — 453 Psy "Daddy" rowspan=2 454 — colspan=3
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