Perfect all-kill

Perfect all-kill (Korean: 퍼펙트 올킬; abbreviated as PAK) is a music chart achievement in South Korea where a song simultaneously reaches number one on the real-time, daily, and weekly components of iChart, a music chart ranking aggregator operated by the South Korean web entertainment publisher Instiz Corporation, the operator of the Instiz [ko] web forum.^[1][2]

Perfect all-kill certificate

The term "perfect all-kill" was first used when the song "Nagging" by IU featuring Seulong ranked at number 1 on all Korean music charts in June 2010.^[3] Although Instiz iChart was launched in March 2010, it does not list 2010 records. The artist that holds the record for the most number of songs to achieve a PAK is IU with 22 songs. The song with the most hourly PAKs is "Ditto" by NewJeans with 655 PAKs.^[4] "Celebrity" by IU holds the record for a solo act with 462 PAKs.^[5]

iChart

The Instiz iChart is the first and only South Korean online music chart that aggregates the rankings of all major music streaming services in South Korea,^[1] including Melon, Genie, Bugs!, Vibe, Flo, and YouTube Music which provide real-time, daily, and weekly data.^[6] The iChart has its own real-time and weekly rankings based on points given to songs. The iChart is considered transparent as it calculates scores based on various agencies' ranking data, and updates its real-time and daily charts accordingly. The users can also visit the source agencies' websites directly to compare rankings. The records may be accessed by the public for three months.^{[citation needed]}

History

Before 2015, the iChart aggregated scores from 10 music service providers. These 10 agencies were Melon, Mnet, Bugs!, Olleh, Soribada, Genie, Naver, Daum, Cyworld, and Monkey3. In February 2017, major domestic music distributors such as Melon, Bugs Genie, Mnet, Soribada, Naver Music, and Monkey3 changed their streaming calculation to real-time graphics only between 12pm and 6pm.^[7] This meant that anything that was released outside of this time period would not count towards the chart until 1pm the following day. This major change was reported as a measure in music chart searches largely reflecting a song's popularity.^[8][9] In May 2017, Olleh and Monkey3 were excluded from the Instiz iChart ranking calculation and Naver Music's score doubled. In February 2019, Flo was added to iChart. In October 2019, Mnet discontinued its service and merged with Genie, and was later removed from the chart. Naver Music has also been removed and replaced with Naver VIBE.

In May 2020, Melon made some changes to its real-time ranking calculation. The chart changed from rankings based on hourly usage per song to a chart calculated based on the number of unique listeners.^[10] Streams and downloads from the last 24 hours were calculated instead of the last hour.^[11]

Mechanic

The iChart gathers the data and attributes points to each song.^[12] The Instiz iChart attributes bonus points for more popular and widely used platforms than others. It applies a multiplier to the accumulated points that a song gets from certain charts. This multiplier only applies on daily charts.^{[citation needed]} The following table shows the maximum points for every chart.

Streaming service	Multiplier	Points	Description
Melon	6x	12,480	the largest of the major digital music providers in South Korea, which has a market share of around 40% online subscribers.[13] It provides real-time (24Hits) and daily (Daily Top 100) rankings. Its criteria are 40% streaming (for accounts verified by Korean phone number) and 60% downloads for the past 24 hours.[14]
Genie	4x	9,120	a subsidiary of KT Corporation, is the 2nd largest music service provider in South Korea and has 24% market share. It provides real-time (Top 100 Realtime) and daily (Top 100 Daily) rankings. Its chart calculation is based on 50% streaming and 50% downloads. Genie chart freezes from 1 AM KST until 7 AM KST daily but the streams are still counted during this period.[15]
Vibe	2x	3,360	created by Naver in partnership with YG, and accounts for 10% market share.[citation needed] It provides real-time (Today Top 100) chart data.
Flo	No daily chart	5,040	a relatively new service provider that was created by SK Telecom in partnership with JYP, SM, and Big Hit. It accounts for 18% market share. It provides real-time data only.[16]
YouTube Music	Weekly chart only	5,040	developed by YouTube and held the third-largest market share in Korea (19.22%).[17] It provides weekly data only.[18]
Bugs!	1x	4,080	a Korean digital music streaming service and accounts for 5% market share. It provides real-time (Song Chart Realtime) and daily (Song Chart Daily) rankings. Similar to Genie, its chart also freezes from 1 AM KST until 7 AM KST.

Related terms

Other "all-kill" categories on the Instiz iChart include Real-time All-Kill (RAK) and Certified All-Kill (CAK). RAK is achieved when a song becomes number 1 on all iChart real-time charts while CAK is achieved when a song becomes number 1 on all iChart real-time and daily charts. For a song to achieve a PAK, it needs to become number 1 on iChart weekly chart as well.^[19]

Achievements

Top 10 songs with the most hourly perfect all-kills

The following table lists the top 10 Korean songs with the highest number of perfect all-kills (in hours), from 2010 to present.

Rank	Song	Artist	Album	PAK (hours)	Year	Ref.
1	"Ditto"	NewJeans	OMG	655	2023	[20]
2	"Dynamite"	BTS	Be	610	2020
3	"Celebrity"	IU	Lilac	462	2021
4	"I Am"	Ive	I've Ive	359	2023
5	"Love Wins All"	IU	The Winning	339	2024
6	"Any Song"	Zico	Random Box	330	2020
7	"Supernova"	Aespa	Armageddon	317	2024
8	"Apt."	Rosé	Rosie	282	2024
9	"Rollin'"	Brave Girls	Rollin'	262	2017
10	"Butter"	BTS	Non-album single	239	2021
As of November 23, 2024

Artists with the most songs to achieve a perfect all-kill

The following table lists the top Korean artists with the highest number of songs that achieved a perfect all-kill from 2010 to present.

Rank	Artist	Number	Songs	Ref.
1	IU	22	"Nagging" "Good Day" "The Story Only I Didn't Know" "You & I" "The Red Shoes" "Friday" "My Old Story" "Leon" "Twenty-Three" "Through the Night" "Can't Love You Anymore" "Palette" "Autumn Morning" "Bbibbi" "Love Poem" "Blueming" "Give You My Heart" "Eight" "Celebrity" "Lilac" "Strawberry Moon" "Love Wins All"	[5]
2	Big Bang	7	"Tonight" "Blue" "Loser" "Let's Not Fall in Love" "Fxxk It" "Flower Road" "Still Life"
3	Ive	5	"After Like" "Kitsch" "I Am" "Baddie" "Rebel Heart"
4	Twice	4	"Cheer Up" "TT" "Knock Knock" "Yes or Yes"
BTS	"Fake Love" "Boy with Luv" "Dynamite" "Butter"
(G)I-dle	"Tomboy” "Nxde" "Queencard" "Fate”
G-Dragon	"Having an affair"[i] "That XX" "Untitled, 2014" "Too Bad"
5	Busker Busker	3	"Cherry Blossom Ending" "If You Really Love Me" "Love, At First"
Blackpink	"Whistle" "Ddu-Du Ddu-Du" "How You Like That"
Bolbbalgan4	"Some" "Travel" "Workaholic"
Park Myung-soo	"Having an affair"[i] "I Got C" "Leon"
As of April 10, 2025

Notes

1. Credited under GG, a collaboration between G-Dragon and Park Myung-soo.^[21]