i used this in my [DM] map and it worked.
function startclient()
outputChatBox ("#7CFC00[Map]#AAAAAA You're now playing: [DM] #7CFC00Xeno#AAAAAA II - Bounce" , 255, 0, 0, true)
outputChatBox ("#7CFC00[Map]#AAAAAA Music: Calvin Harris ft. Kelis - #7CFC00Bounce" , 255, 0, 0, true)
outputChatBox ("#7CFC00[Map]#AAAAAA Press #7CFC00'M'#AAAAAA to toggle music on/off" , 255, 0, 0, true)
outputChatBox ("#7CFC00[Map]#AAAAAA Goodluck and have #7CFC00Fun!" , 255, 0, 0, true)
end
addEventHandler("onClientResourceStart", getRootElement(), startclient)