Ritme10.png is not defined as an image (img) in the header of the html code
The index counter currently used to select the rhythm is single digit only
PS: Note that current max is 9 rhythm images, on a large resolution screen 10 images also fit, but increasing the max nr of rhythms may become a problem on smaller screens.
Reason for image 10 not being shown is twofold:
PS: Note that current max is 9 rhythm images, on a large resolution screen 10 images also fit, but increasing the max nr of rhythms may become a problem on smaller screens.