Jeffrey Ou is a pianist from Carrollton, Texas. He was born in Kaohsiung, Taiwan, and showed a remarkable gift for music as a very young child. His family moved to the United States when he was three and he began formal piano training at the age of six. Ou launched his competitive career at 13 when he won first prize in piano and was named 1 of 3 overall Grand Prize Winners at the 2004 North Texas Youth Music Competition.
Ou graduated from Newman Smith High School in Carrollton, Texas, where he was a member of many musical groups and orchestras. When not at school, or participating in competitions, he enjoys bringing his gift of music to nursing homes in the area where he lives. 
Jeffrey Ou's Quarterfinals performance in Episode 417 consisted of playing Pachelbel's "Canon in D" and Elton John's "Saturday" on the piano. In the middle of his "Saturday" performance, however, one of Jeffrey's background dancers kicked a cable out that led to an audio problem; Jeffrey's piano playing could no longer be heard. Nevertheless, Jeffrey received enough votes to be sent to the Semifinals in Episode 418 instead of BRI.
Jeffrey Ou's Week 2 Semifinals performance in Episode 423 consisted of playing Franz Liszt's "Hungarian Rhapsody No. 6" on the piano. Every time he hit keys on the piano, it turned on the lights in the background. Piers Morgan buzzed the act. Jeffrey did not receive enough votes to be sent to the Finals, eliminating him from the competition in Episode 424 along with Erik and Rickie.