SOPHISTICATED ONLY这张专辑收录了多首风格独特的曲目，包括与多位艺术家合作的歌曲。首曲《늘 먹던 걸로》邀请了朴宰范助阵，展现了两人默契的音乐合作。《바빠》则与BIG Naughty (서동현)合作，带来充满活力的节奏。《1,150km》是一首深情的独唱曲，表达了遥远的距离感。《잘못했어》与Yel的合作，讲述了一段悔恨的情感故事。专辑中还包含了一段名为《FOUR SEASONS SKIT》的短篇音乐片段，为听众带来不同的听觉体验。《ROLLING LOUD》则是一首充满力量的曲目，展现了SEIN和TRADE L的音乐才华。《뭐》与Wuuslime和DIMO REX的合作，融合了多种音乐元素。《PILLOW TALK》与JEY的合作，营造了温馨的氛围。最后一首《FYP》则以和声演唱的形式，为专辑画上了完美的句号。专辑的视觉设计由TRADE L完成，整体风格统一且具有辨识度。SOPHISTICATED ONLY01. 늘 먹던 걸로 (Feat. 박재범)Composed by SEIN, TRADE L, 박재범 Lyrics by TRADE L, 박재범Arranged by SEINKeyboard, Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT02. 바빠 (Feat. BIG Naughty)Composed by SEIN, TRADE L, BIG Naughty (서동현)Lyrics by TRADE L, BIG Naughty (서동현)Arranged by SEINGuitar by 정경환Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT03. 1,150kmComposed by SEIN, TRADE LLyrics by TRADE LArranged by SEINSynth, Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT04. 잘못했어 (Feat. Yel)Composed by SEIN, TRADE L, YelLyrics by TRADE L, YelArranged by SEINKeyboard, Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT05. FOUR SEASONS SKITComposed by SEIN, TRADE LLyrics by TRADE LArranged by SEINMixed by TRADE LMastered by TRADE L06. ROLLING LOUDComposed by SEIN, TRADE LLyrics by TRADE LArranged by SEINSynth, Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT07. 뭐 (Feat. Wuuslime, DIMO REX)Composed by SEIN, TRADE L, Wuuslime, DIMO REXLyrics by TRADE L, Wuuslime, DIMO REXArranged by SEINSynth, Drum, Bass by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT08. PILLOW TALK (Feat. JEY)Composed by SEIN, TRADE L, JEYLyrics by TRADE L, JEYArranged by SEINKeyboard, Guitar, Drum, Bass by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MAT09. FYPComposed by SEIN, TRADE LLyrics by TRADE LArranged by SEINAdditional Vocals by GistGuitar, Drum, Bass, Percussion by SEINMixed by 전찬민 @ STUDIO MATMastered by 전찬민 @ STUDIO MATAlbum Art by TRADE L