He moved to Los Angeles, California to pursue his music career after his time on American Idol.

[4] On his American Idol "Fast Facts" page, David cites musical influences as: Stevie Wonder, Donny Hathaway, Alicia Keys, Anthony Hamilton, Michael Jackson, Peabo Bryson.

When asked to list his top pop artists, he cites; Alicia Keys, Stevie Wonder, Peabo Bryson.

[7] Randy Jackson claimed after one of his performances on American Idol that Hernandez has a Stevie Wonder vibe coming from his singing style.

[8] David Hernandez was once part of a singing group called Vinyl Four which consisted of four singers prior to his appearance on American Idol.

After failing to take first place, he traveled to San Diego to audition successfully for the seventh season of American Idol.

[1] Hernandez auditioned for American Idol season 7 at San Diego, California, singing "Ain't Too Proud to Beg" in front of the judges.

His "Papa Was a Rollin' Stone" was both vocally convincing and demonstrated a degree of showmanship that he had previously been missing.

Hernandez was revealed to have worked as a nude male stripper at a gay strip club, called Dick's Cabaret, in Phoenix, Arizona.

He was subsequently asked to perform at The Children's Hospital of New York Presbyterian where he sang "Papa Was a Rollin' Stone" and "In the Midnight Hour."

Hernandez sang the National Anthem at US Airways Centre on April 4, 2008, for the Phoenix RoadRunners hockey game finals.

[citation needed] On May 1, 2008, Hernandez made an appearance at TV Guide's Sexiest Stars 2008 Party.

Hernandez headlined a New Year's Eve show at the Greek Isle Hotel & Casino in Las Vegas, with Mikalah Gordon and Dezmond Meeks.

[15] In 2021, Hernandez replaced Aaron Carter as the headliner of the nude male musical revue Naked Boys Singing in Las Vegas, for a three-month residency beginning September 15, 2021.