wake

I want to make the alarm clock set to a song instead of an alarm how do this can you tell me step by step. Thanks a lot!!!

Hi Everyone.I`m 15 and I may have a sleeping disorder.There is my case-I go to bed and I`m really tired,and usually get to sleep in about 30 min.I sleep and dream every night,and about 3:00-4:00am I wake up and still feel sleepy but cannot get to sleep. P.S.-I go to bed around 11,but I exercise...