Liu Yu-Yun has been famous international Composer and Orchestra Conductor. He made more than 1000 music so far, than these music usually are taken abroad to performance. In 2000 and 2002 won the Ministry of Education's Fine Arts Creation Award for Full Moon, Duckweed, and Guest Feelings. After returning to Taiwan from his studies in France, he gave a concert premiering his compositions called New Compositions, Heart's Music. Currently he works as a professional composer and arranger.

In 2005, Liu won a prize at the Ethnic Music Composition Competition organized by the Taipei Chinese Orchestra for his pipa concerto Hometown. That same year, he wrote “Wandering in the Path of Fate”, which combined Chinese flute, interactive devices and computers and was performed by well-known bamboo flautist Chen Zhonghen. In 2006, he composed the soundtrack music for the National Geographic Channel’s “Butterfly Code”, and his music for the games The Legend of the Three Kingdoms and Fantasia Sango received warm praise from people in the game industry. In 2007 he collaborated with Pili International Multimedia, writing close to a hundred pieces of music for different plot elements and theme music for po-tē-hì (glove puppetry) characters. In 2008 he collaborated with Ju Percussion Group and pipa player Wang Shirong to create a concerto for pipa and percussion entitled Charming Shadow. In 2009, his choral work Love River Medley was premiered at the Kaohsiung Music Center on Valentine's Day. In the same year, he composed and arranged the pipa album Seeking a Voice in an Ancient Garden, which won the Best Ethnic Music Composition Album at the 20th Golden Melody Awards, and for Neimen Township in Kaohsiung County he composed Song Jiang Battle Array music “Wind, Fire, Thunder, Lightning”, which was made into an album and performed at the Edinburgh Fringe Festival. In 2010 he collaborated with Bean Theater on the musical My Name, and his “Kua Fu Chases the Sun” received a Merit Award at the international composition competition held by the Taipei Chinese Orchestra to celebrate their 30th anniversary.

Liu Yu-Yun uses computers to create all types of music. His compositions cover a wide variety of styles and categories. He is a composer of rich achievement, both prolific and versatile.