"格外温暖的那个四月春日" (유난히 따뜻했었던 4월의 그 봄날) 是一张充满温暖与情感的专辑。这张专辑由 PANEB 和 IRYOOK(이륙)共同制作，录音和混音由 김영식 (Kim Youngsik)完成，母带处理同样由他负责。专辑的摄影由 정성훈 (Jung Sunghoon)完成，音乐视频由 PANEB 导演，呈现由 akin Music 提供。专辑中的两首歌曲"사랑이라는 단 하나의 이유로" 和"우리가 혹시 마주친대도" 均由 PANEB 作词，PANEB 和 IRYOOK(이륙)共同作曲和编曲。PANEB 担任主唱，吉他由 정원재 (Jung Wonjae)演奏，鼓、键盘、合成器和贝斯由 IRYOOK(이륙)演奏。此外，"우리가 혹시 마주친대도" 还加入了 황영우 (Hwang Youngwoo)的贝斯和 김진걸 (Kim Jingeol)的萨克斯风演奏，为歌曲增添了丰富的层次感。"유난히 따뜻했었던 4월의 그 봄날"[Album Credits]Executive Produced by PANEBAlbum Produced by PANEB, IRYOOK(이륙)Recorded by PANEB at PANEB's LABMixed by 김영식Mastered by 김영식Photography by 정성훈Music Video Directed by PANEBPresented by akin Music[Song Credits]1. 사랑이라는 단 하나의 이유로Composed by PANEB, IRYOOK(이륙), Ai BANCOLyrics by PANEBArranged by PANEB, IRYOOK(이륙)Vocals by PANEBChorus by PANEBGuitar by 정원재Drums, Keys, Synth, Bass by IRYOOK(이륙)2. 우리가 혹시 마주친대도 Composed by PANEB, IRYOOK(이륙), Ai BANCOLyrics by PANEBArranged by PANEB, IRYOOK(이륙)Vocals by PANEBChorus by PANEBGuitar by 정원재Bass by 황영우Saxophone by 김진걸Drums, Keys, Synth by IRYOOK(이륙)