Lil' Rattlesnakes - Clean It, Green It, LA River Song by KCET Departures published on 2011-04-28T19:51:02Z Songs of the LA River is presented by the City of Los Angeles in collaboration with the Mayor's L.A. River Day of Service, Councilmember Ed P. Reyes, Ozomatli, the Department of Cultural Affairs and KCET Departures. LA based youth, ages 6-18, are invited to submit an original piece of music inspired by the Los Angeles River. The top entries will win a chance to perform their song with Ozomatli at the FREE LA River Day of Service Jamz Concert, on Saturday, April 30th, 2011. So what are you waiting for? Start composing!