CD 4069 resonant lp(drums) and Bandpass filter

with this, you have a cd4069cn active resonant lowpass (and you can make drums with it by connecting a 555 pulse/sw on input)and an active bandpass filter on one chip based on this schematics and tips :http://aeeprojects.blogspot.be/2011/09/filters-with-cd4069.html

http://aeeprojects.blogspot.be/2011/09/filters-with-cd4069.html

video (only the lp for making bassdrum)

https://www.facebook.com/KOootOooo/videos/549112011937529/?__mref=message_bubble