I was on 8.4 and had no issues with the clock. A few mornings ago it used a different song than what I selected. When I get ready for bed, I open Music and select the song I want for the wakeup, hit the home button and slide up the control to set volume, open iHome Set and hook my phone up to the clock. Once it connects, I verify that the alarm is on and set for the correct time. So Music is in the background and Set is the open app. I let the phone go to standby. Prior to the iOS 9 update, this worked virtually flawlessly. Now, as I stated, the Set app has had issues connecting to the phone and (I'm guessing) has occasionally lost connection to the phone during the night as the clock beeps rather than playing the selected song. This happened this morning and I had to disconnect the phone to turn off the alarm as none of the buttons on the clock worked until I undocked. And, the the alarm went off 3 minutes late even though I never changed the alarm setting.