I've never heard Ladino music, but it sounds interesting. I don't have much to base my opinion of Sephardic/Mizrachi music except from what I hear in Israel, and based on what I've heard in Israel I don't really like it, and yes, it sounds too Muslimy to me. I don't like the arabic scale, and regardless if one thinks there's a difference between it and arab music, the scales, instruments, and singing style was all invented by arabs. That's not to say that there isn't fantastic and beautiful Sephardic/Mizrachi music, I'm sure there's plenty of it, I just haven't heard any because I haven't attempted to ever find the good stuff. I'm not a big fan of that singing style, I'm sure it could be done beautifully, but most of what I've heard is brash and overdone.