Keep in mind that learning a new language becomes harder and harder with each year that passes after early adolescence for most people. That means that the first generation coming to the US will learn some English, but probably not be truly bilingual in their lifetime.
And, beyond that, things like music preferences will, perhaps, expand, but the core cultural musical styles will be "favorites" all during a person's lifetime. Of course, we are sometimes deceived into thinking otherwise because many immigrants grew up outside the US listening to English language music which they know and love.
But don't expect first generation immigrants, for the most part, to be particularly proficient in English unless they already had been learning in school in their home nation. Otherwise, those immigrants will be working hard to get ahead, and will not have the time to be taking ESL classes and the like. Further, many of today's Latin American immigrants have a limited formal education even in Spanish, so they have never learned how to learn.
Back in 1910 less than 5% of Americans went to college, and fewer completed it. Today, more of us go to college than those who finished High School 111 years ago. It's difficult the make comparisons when the "standard" has changed so much.
