co-producer 이종훈
executive-producer 장현진
executive-producer [production director] 김진명
executive-producer [production director] 배종한
lead vocals, chorus IU
tracks 9 mixed by Hyomin Kang
tracks 3, 10 mixed by 고승욱
tracks 5 mixed by 고현
tracks 1, 4, 6 mixed by 손명갑
tracks 7 mixed by 윤정오
tracks 2, 8 mixed by 조준성
tracks 5 mixed by [assistant] 김경환
tracks 7 mixed by [assistant] 박은경
tracks 3, 10 mixed by [assistant] 선영
tracks 7 mixed by [assistant] 성영민
tracks 9 mixed by [assistant] 이원경
tracks 1, 4, 6 mixed by [assistant] 임광덕
tracks 2 mixed by [assistant] 초자연
tracks 8 mixed by [assistant] 최자연
tracks 2, 8 mixed by [assistant] 황민희
photography by 목정욱
producer IU
tracks 9 recorded by Hyomin Kang
tracks 10 recorded by 김형진
tracks 10 recorded by 서동광
tracks 1 to 8, 10 recorded by 손명갑
tracks 3, 10 recorded by 오성근
tracks 7 recorded by 윤정오
supervised by [executive supervisor] 김영석
Distributed By LOEN Entertainment, Inc.
Manufactured By Seoul Media, Inc.
Recorded At LOEN
Mixed At LOEN
Mixed At W Sound
Recorded At Studio-T
Mixed At Bono Studio
Mixed At Koko Sound Studio
Recorded At Stradeum Studio, Seoul
Recorded At Lead Sound
Mixed At Stradeum Studio, Seoul
Mixed At Lead Sound
Recorded At Brickwall Sound
Mixed At Brickwall Sound
Recorded At 서경대학교 녹음실
Fourth studio album by IU.

Tracks 1, 4, 6 Recorded and mixed at LOEN
Tracks 2, 8 Recorded at LOEN; Mixed at W Sound
Track 3 Recorded at LOEN & T Studio; Mixed at Bono Studio
Track 5 Recorded at LOEN; Mixed at Koko Sound Studio
Track 7 Recorded at LOEN, Stradeum, Lead Sound; Mixed at Stradeum, Assistance at Lead Sound, Stradeum
Track 9 Recorded and Mixed at Bricwall Sound
Track 10 Recorded at LOEN, T Studio & 서경대학교 녹음실 ; Mixed at Bono Studio

Distributed by LEON Entertainment, Inc. Manufactured by Seoul Media, Inc. 2017.04.
Made in Korea
Barcode: 8 804775 080043
Barcode: 8804775080043 (Scan)
Matrix / Runout: L100005326 E 170419
Mastering SID Code: IFPI LA71
Rights Society: KOMCA