Disclaimer: This song is copyrighted by Konami, therefore, I do not own this audio.
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Song Name: 子供の落書き帳 (ロングバージョン)
Artist: 佐々木博史
Genre: PROGRE
Game the Song Came From: ポップンミュージック 15 冒険 (Pop'n Music 15 ADVENTURE)
Download Link: http://www.mediafire.com/?85h78vhs12xxtkz