Joseph Thomas Youngman (born March 17, 1982), better known by his stage name Wolfgang Gartner, is an American DJ and music producer.

[4] A portion of the episode was filmed at his home in Los Angeles, California, where he gave a tour of his studio and introduced music videos.

Gartner's music has been featured in a number of video games, including the racing game Midnight Club: Los Angeles ("Squares" and "Montezuma"), snowboarding game Stoked ("Circles"), and as downloadable content for Activision's DJ Hero and Hi-Fi Rush ("Wolfgang's 5th Symphony"), Dirt Showdown ("Illmerica"), Forza Horizon ("Illmerica"), Forza Horizon 4 ("Ching Ching"), FIFA 20 (”Anaconda“) and in The Crew Motorfest ("Cosa Nostra").

"Illmerica" was mashed up with "We Are Your Friends" (by Justice vs Simian) to form the track "Illmerica Are Your Friends" by Australian DJ Steve Camp; the song became popular after it was played as the opening track on episode 186 of Tiësto's radio show Club Life in 2010.

The music video received regular rotation on MTV UK, MuchMusic (Canada), and AMtv in the USA.

In 2010, Gartner debuted as a featured guest on BBC Radio 1's Essential Mix series, hosted by DJ/producer Pete Tong.