In his forward to the Yede Abraham site, Rabbi Gabbai of Mikveh Israel (Philadelphia) indicates that S&P congregations used to exist in places such as Cairo, Salonica, and Cochin (India). This past weekend, I happened to ask him about the Cairo congregation (stumbled upon, actually). He indicated that the central synagogue in Cairo when he was growing up used melodies and traditions very similar to Mikveh Israel.Today, Egyptian Jews have been largely subsumed into the Syrian hegemony. But there was apparently quite a bit of diversity when they were actually in Egypt. I don't know anything further about this subject, but I thought I'd share it.