Disturbing the peace Colorado?

Well i had just graduated from job corps and was home for about 3 days i was in my house it was about 4 pm and there was a knock on my door it was the police saying my music was to loud and that the lady up the street was complaining i had received no prior warning for the music and no one at all has warned me about it but they said that i had been warned when i hadnt because i had only been there for 3 days i am a minor 17 years old and there was no parent present at the time but still i recived a ticket for distubing the peace is there anything i can do to fight this case i have already gotten letters from neibors and the land lord or what ever saying i had not been warned and that she complains about everything and also my music was not that loud so what can i do about this anything at all?