Justin Furstenfeld is the lead singer, guitarist and lyricist of Blue October. He was born on December 14, 1975 in Houston, Texas.

Furstenfeld has written over 500 songs.

When not touring with his band, Furstenfeld resides in Lincoln, Nebraska. He has a daughter, Blue (born in May, 2007), to whom several of the songs on the current Blue October album Approaching Normal are dedicated He is the brother of Blue October drummer Jeremy Furstenfeld. Justin Furstenfeld has battled with bipolar disorder through most of his life. He has his condition under control, saying in an interview that "I'm not a danger to myself [anymore]."

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