How to make musical greeting card at home

It is a tutorial video to make DIY musical greeting card .
you can make it for New year, birthday or any other occasion gift
I use to make it -

BT 66 Ic you can also use UM 66 Ic
SPDT limit switch
Piezo buzzer
3Volt battery
Another new musical & talking greeting card video - https://youtu.be/rR0hmvp3POM
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Видео How to make musical greeting card at home канала Technoreview85