"A History of the Piano, 1157-2007." A History of the Piano, 1157-2010. UK Piano. Web. 28 Dec. 2011. <http://www.piano-tuners.org/history/history_1.html>.
Hwang, Byungki. B Y U N G K I * H W a N G. Web. 13 Nov. 2011. <http://www.bkhwang.com/>.
Lee, Won Jun. "Gayagum: a Heart-touching Instrument." Friendly Korea. 12 Feb. 2010. Web. 13 Nov. 2011. <http://www.prkorea.com/engnews/index.cgi?action=detail>.
"U-Gaya Tour Guidin." U-가야투어가이딘. Web. 13 Nov. 2011. <http://tour.goryeong.go.kr/eng/history.php?m_code=>.
"Jango - Free Music - Internet Radio That Plays What You Want! Listen to
Music Online Radio Stations. Jango.com Uses Html Frames to Play
Continuous Free Internet Radio. Your Browser Does Not Support Frames.
Please Upgrade Your Browser to Use This Service." Jango. Web. 28 Dec. 2011. <http://www.jango.com/music/Yiruma/_full_bio?l=0>.
"The Romanticism." History Of Music. Web. 29 Dec. 2011. <http://historyofmusic.tripod.com/id11.html>.
"U-Gaya Tour Guidin." U-가야투어가이딘. Web. 13 Nov. 2011. <http://tour.goryeong.go.kr/eng/history.php?m_code=>.
"Jango - Free Music - Internet Radio That Plays What You Want! Listen to
Music Online Radio Stations. Jango.com Uses Html Frames to Play
Continuous Free Internet Radio. Your Browser Does Not Support Frames.
Please Upgrade Your Browser to Use This Service." Jango. Web. 28 Dec. 2011. <http://www.jango.com/music/Yiruma/_full_bio?l=0>.
"The Romanticism." History Of Music. Web. 29 Dec. 2011. <http://historyofmusic.tripod.com/id11.html>.