Up to now, the widest attention Iranian-English hip-hop aspirant Mams Taylor has attracted was probably the buzz he generated for putting a smackdown on Desperate Housewives bit player Jesse Metcalfe outside a Hollywood nightclub in February 2008. Turns out, though, that the burly rapper, who’s collaborated with hip-hop bigs like Snoop Dogg and T-Pain, can throw a righteous hook with more than his fists. Earlier this afternoon, Taylor leaked two versions of a new single, “United for Neda,” written in memory of Neda Agha-Soltan, a 26-year-old Iranian woman whose senseless murder during the recent election protests in Iran made her a symbol of resistance around the world.

Taylor enlisted some of Iran’s most prominent artists to pitch in on the new single: iconic singers Dariush, Sattar and Morteza, actors Shoreh Aghdashloo and Parviz Sayyad, Iranian-American composer and vocalist Sussan Deyhim, and many more. One version of the track is performed entirely in English, the other includes verses in Farsi; both feature the same poignant, singsong melody and media sound bites, including a snatch of a speech by President Obama. With the situation in Tehran far from settled, Taylor’s single could hardly be more of the moment.