"The DT20 Zone" evolved in 2007 when it started out as the Top 3 feature in the 2004 editions of the "ISGD" Show in May of that year, then it was discontinued in June, and spun off into another incarnation called the "Top 9" or something like that in August.

In mid-2006, after experimenting with requests and new songs, the old idea of the "DFSX Lab" back in 2004 was resurrected as "New Strokes" playing the newest comedy and dementia songs on the ballot. The request block was finally given a name as "The Demented Resurrection Zone". The three-show block was known as the DT20 Zone, and it aired on DFSX until the weekend of July 6-8, 2007.

The DT20 Countdown show has moved to a podcast beginnning the weekend of July 13th, 2007 and has been renamed "The Mad Music Dementia Top 20 Show." It had its final airing with the December 28, 2007 podcast.

Prior to that, he began hosting his own comedy music show in 2003 called "I Still Get Demented" on a streaming service, and spun off the "Dementia Top 20" countdown show in 2004. After the streaming service was terminated in 2007, "ISGD" was held in limbo and the "DT20" moved to a podcast, but as time went on, it became apparrent that "DT20" was meant for the streaming service, while "ISGD" was meant for a podcast.

After 2007, "DT20" was retired for good, but in 2008, the "Mad Music Comedy Zone" will feature the top two songs battling it out for the number one spot each week at the end of each show, but that lasted for only a month.

On January 12, 2008, DJ Particle has resurrected the MMDT20 show and is now hosting the show on Captain Wayne's website The Mad Music Archive.

The DementiaMania weekly surveys were featured on the original episodes of the Mad Music Comedy Zone, but were dropped after the April broadcasts.

In May of 2008, the weekly countdown David's Top 10 premiered on the resurrected dfsxradio stream. In August of 2008, the DementiaMania ballot was changed to David's Top 10 ballot to reflect the name of the series.