How to turn off automatic renewal of Apple music subscription

Update ios 8.4 that will have Apple music app

Launch the music app from home screen

Tap on user on left top corner 

Tap on view Apple ID

Scroll up and select subscription 

Tap on manage in subscription section

Select your membership 

If it's on turn it off it will be on after you install ios 8.4 update you don't want to get surprised when Apple starts taking away your money after 3 months trial is over better to turn off auto renewal subscription.