If (Mata Aetara)

"If -Mata Aetara-" (If ～また逢えたら～, If (I Could See You Again)) is a song recorded by South Korean band Day6. The song was released as the group's first Japanese CD single on March 14, 2018, by Warner Music Japan. Ahead of its release, the song was pre-released as a digital single on February 26, 2018.^[1][2] "If -Mata Aetara-" serves as the theme song for the Japanese television drama, Repeat (Unmei wo Kaeru 10 Kagetsu).^[3]

"If -Mata Aetara-"
Standard edition/digital download cover
Single by Day6
from the album Unlock
B-side	"Baby, It's Okay"
Released	March 14, 2018
Genre	J-pop rock
Length	3:22
Label	Warner Music Japan
Songwriter(s)	Chailhun Sung-Jin Wonpil Young K
Day6 singles chronology
"I Like You" (2017) "If -Mata Aetara-" (2018)
Alternative cover
Limited edition cover
Music video
"If -Mata Aetara-" on YouTube

Composition

The song is in the key of E Major and is 184 beats per minute.

Track listing

No.	Title	Writer(s)	Length
1.	"If -Mata Aetara-"	Chailhun Sungjin Wonpil Young K	3:22
2.	"Baby, It's Okay"	Hong Ji-Sang Jae Lee Woo-min 'Collapsedone' Sungjin Wonpil YHANAEL Young K	3:53
3.	"If -Mata Aetara-" (Instrumental)	Chailhun Sungjin Wonpil Young K	3:21
4.	"Baby, It's Okay" (Instrumental)	Hong Ji-Sang Jae Lee Woo-min 'Collapsedone' Sungjin Wonpil YHANAEL Young K	3:53

Limited edition DVD

No.	Title	Length
1.	"If -Mata Aetara-" (Music video)
2.	"If -Mata Aetara-" (Music video making movie)

Charts

Daily charts

Chart (2018)	Peak position
Japan (Oricon)[4]	27

Weekly charts

Chart (2018)	Peak position
Japan (Oricon)[5]	28

Certification and sales

Region	Certification	Certified units/sales
Japan (RIAJ)	None	4,832 (physical sales)

Release history

Region	Date	Format	Label	Ref.
Japan	February 26, 2018	Digital download (Pre-release)	Warner Music Japan	[2]
	March 14, 2018	CD single (Standard edition)		[1]
		CD single/DVD (Limited edition)		[6]
		Digital download		[7]