Sad to share that Rebbe Alter has died. His music was catchy, educational, and he was one of a small handful of artists (Uncle Moishy and Marvelous Middos Machine being two others) whose work has had consistent staying power and resonance over the years.
His hits include "Pharoah in Pajamas", "Aish Is Fire", and the "Afikoman Song" (setting it to the melody of Shomrim Hafked was an ironic touch that I assume was intentional).
He educated generations of Jewish children and his songs will continue his legacy. Yehei zichro baruch.