i have a question : if mal'chik is a nominative, i.e. the subject of the sentence why is it in the accusative here ::mal;'chiku. or is it that mal'chiku is a dativ and the Russian language says : the music is liked by the boy ? I know I must learn the declinations by heart like I did with German,Latin and Greek when a was a boy but I'd appreciate an answer and it looks like you are a good teacher.
Masculine nouns ending in a consonant receive у:
Two moms are visiting with each other and the one puts on a song and the boy starts dancing and the other mom says something to the effect of "Oh look, the boy likes this music". Or "The boy doesn't like country, he likes rock and roll" - "He doesn't like that music, but this music".