DxS (SEVENTEEN) -"DxS 1st Mini Album 'Serenade'" [COMPACT Ver.] The vocal duo of global K-Pop group SEVENTEEN has arrived as a new subunit - DxS (DK X SEUNGKWAN) releasing their 1st Mini Album 'Serenade' available in two variations of the COMPACT Ver. Contents of the album include: CD, CD Envelope, Outbox, Photobook (12p), Credit Book, Sticker, Photocard (2 of 4), Lyric Card. Dimensions: 150 x 100 x 8 mm.