Ok, the problem is i wanna let the music keep on going when a event

Ok, the problem is i wanna let the music keep on going when a event
plays bgm = forebonding.bgm (a panic song/in a dangerous condition...)
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and after that i went to another room and the music CHANGE!
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Inside the event i was talking about
-Switch 0024 is on
-Sprite of a blank
-Touched by hero
<>Shake screen (strong,Slow)
<>Flash screen(wait)
<>Switch 0025 switch on
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-Switch 0025 is on
-Sprite of a blank
-Auto start
<> Play bgm = forebonding.bgm
<> Erase event

If Anything wrong can someone
re-do it plz pwety plz...