How can I remove the music from a Hallmark recordable card with music?

I want to have it so the sound recording functions normally and plays back when you open the card but I don’t want the music to follow afterwards. I understand that there’s a simple circuit within the card. Would it be possible to simply damage the part containing the music since it comes after the recording? If not, how would I go about disabling the music so it just records and plays back? ...besides closing the card. Thanks in advanced.

http://hallmark.com/online/in-stores/greeting-cards/recordable-cards.aspx