I was very surprised!
I was making a circuit for fishing. I found it on a magazine. It has a 555 (do not know why exactly) and after this, there is a buzzer. It also has one potentiometer to adjust sensitivity of fish eat sense (you understand).
Now the strange thing. I was playing around with this. Then, i started to open and close the potensiometer real fast. Every 8-9 tines that i did that, the buzzer start playing music! Really! I do not lie!
It had 7 different small musics. Simple and small but 7.
Is possible that 555 could do that?