How to run the program called when the background vibration

How to run the program called when the background vibration
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Background on how how to call the front desk to call, as your program can run in the background, this is a problem. . . .
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Can shake foreground, the background can run, but you can not call shock
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That vibrate when the music finished playing, background music to be played. . .

However, the call could not shake
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Supports background music, vibration does not necessarily support. I think that this feature can not be achieved without jailbreak.
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reference to the third floor of the reply:

is when the music finished playing shake it, so can the music playing in the background. . .

But the vibration call can not

Before one second tone music player is nearing completion under vibration. Once the music is over there is no way to call, because a player finished the program hangs up.