1st Concept Story CD (plus) Chronicle is the first doujin album released by Sound Horizon on December 30th, 2001. It contains 9 tracks and 5 unlisted tracks. It was released at the 61st Comic Market using a booth registered by Yokoyan a friend of Revo and the illustrator of the album's artwork. The album retailed for ¥1,500 and about 200-300 copies were produced in total. The songs on the album are mostly instrumental with some narration provided by 葉芹 (Hazeri) and 宮坂紀伊 (Miyasaka Kii). On the CD was an HTML file that contained various extras like interviews, lyrics, and bonus tracks. By completing the CD Questionnaire, one could receive the web-released song SH電波 as a gift. This album was expanded upon with the creation of Chronicle 2nd in 2004.