"Ohh. That's kool. I like a lot of different typez. I like hip hop. Dubstep. Some rock. And rap n pop. And I like latin music. And k-pop. Can u dance?"
I find it very interesting.
First, I notice he has thrown away some of our archaic spelling. Using the consistently hard K in place of erratic C.
Our English alphabet has 3 letters that can express the hard K sound: K, Q, and C. We got our alphabet from Latin. The Romans adopted their alphabet from the Etruscans. The Etruscans got the alphabet from the Greeks. But the Etruscans didnt have a G sound in their language and the third letter in the greek alphabet was G or Gamma. The Etruscans did have a lot of K sounds in their language, so they took away the G sound of gamma and gave it a K sound. When the Romans got the alphabet, it had all these K sounds in it. But Latin has a G sound. The Romans left the letters with the sounds the Etruscans had given them, but invented a new letter with the G sound....G. Notice G is a C with a little gamma hooked on it to indicate that this is the C that is to be pronounced like a gamma or G.
And he attempts to use Z in place of S for when S really has a Z sound. (Actually, he fails in "typez" The final S in "types" really has an S sound.)
Modernizing English spelling is a perennial topic of discussion.
The sentence you quoted has a natural rhythm from a list. Since he has rejected conventional grammatical style, his writing expresses this natural rhythm. He has a series of musics to list.
"I like hip hop. Dubstep. Some rock. And rap n pop. And I like latin music. And k-pop."
He gets started in the rhythm with "hip hop. Dubstep. Some rock. And rap n pop." Then the natural rhythm of his list really kicks-in with "And rap n pop. And I like latin music. And k-pop." The "Ands" really punch up the cadence of the rhythm. It has an effect similar to what we feel when we see a series of arches with its repetition.
The rhythm is somewhat spoiled by "I like" in "And I like latin music." But he was just writing an informal email and didnt go back and polish it.