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An hour ago I was walking around my apartment when I heard some music playing very soft. It turned out to be my phone. It was the kind of calm music that you'd hear in the background of a nature program on TV, totally unlike the hardcore stuff I have stored on my phone. The moment I pressed the screen button the music vanished.

I thought it may be a new type of notification I've never heard before, (especially because recently I lowered the notification volume relative to the others), but I found nothing in the notification bar.

I looked at the running programs but found nothing I don't know.

Fearing that it may be a virus or hijack, I installed AVG Mobility antivirus, and it reported that my phone is clean!

Any idea what this may have been?

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closed as too localized by Matthew Read Jun 8 '12 at 17:30

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

This could really be anything. – Matthew Read Jun 8 '12 at 17:30
How long has it been happening? I would try and step backwards and figure out at what point it started happening and remove/revert anything you've changed on your phone since then. – Bryan Denny Jun 8 '12 at 18:44
It happened just this one time. Although I've been using Android phones for more than 3 years, this phone is just 4 months old and packed with new features and I keep discovering new things. – Mark Jeronimus Jun 9 '12 at 0:57
Sounds like an alarm clock or timer notification. – Flow Jun 9 '12 at 11:45