update: I tried with all my songs and yes I know it doesn't work with every song. I just think it works if you play the song on time or it works with some sort of upbeat song. But yea, it doesn't work perfectly like you would expect.
10 Optical Illusions That Will Blow Your Mind (PHOTOS)- this one (black and white) is the best! I tried it once without looking at the dot because I thought that they just showed the colorful picture then changed it to black and white but they didn't!
Giraffe or Elephant Optical Illusion - I'm posting this one again because I absolutely love it! It is amazing to me how different it looks form different angles and how many different options there are for wire sculptures