I was recently listening to a Spanish children song that sounded very similar to 'Old MacDonald Had a Farm', i.e. a new line gets added again and again although much faster and getting again faster during the song. The title could be 'La Rana' (frog) or 'La Raya', I am not sure … any ideas?

Martin

Don't know if it really sounds like Old MacDonald, but could be "La rana"

El Viejo MacDonald?

And then there is this one which sounds like a bad club remix.

this is the one my grandma sang to me as kid

Could someone teach this poor soul how the f! does the youtube links are made?

el tio mac tenia una granja i-a-i-a-ooooo