We’ve taught the kids La Bamba. They love it. It sounds basically just like this, but with a ukulele solo. I am not a mariner, I am the captain, the captain.
But the surprise hit, staying at the top of the Mariposas charts is Eres Mi Sol (a translation of You Are My Sunshine) which you can hear sung here. Having them sing without the assistance of los profes is something of an achievement.