Madden is best known for his environmental song and music video Gone which was in rotation on television networks, MTVU in America and MuchMusic in Canada.

Some of Madden's frequent and recurring themes in his music include the quest for spiritual fulfillment, inequity between the wealthy and shrinking middle class, a plea for ethics and accountability of politicians and business leaders for the welfare of the global community as a whole, and calls against the damage being done to the environment.

From the album Chillin’ In Hades, in Here And Now, which debuted on MTV's Real World Boston (Episode #20),[8] Madden sings about the 1992 Los Angeles riots in the aftermath of the Rodney King verdict.

Madden spoke out in opposition to the Bush administration's invasion of Iraq in print and on the 2004 album Samsara's Grip in Om Tat Sat, Consequence of War, and World Just Is.

Wim Boluijt of Real Roots Café writes "Madden ... placed his finger on the world's most vulnerable spot when, in Dangerous Game from Gone (2006) he asked: 'How many barrels of / Blood does it take / To fill an SUV / These days'.

As noted by Justin Kownacki of Splendid Magazine, "The inherent paradox in Madden's work, and in Eastern philosophy in general, is summed up in World Just Is.