This is the 9613th most frequent German word.
musica
"Musica" is not German; it is Latin (or Italian/Spanish) for "music." In German, "music" translates to "Musik."
'Musica' here refers to music and is used in a general sense to express a preference for a particular type of music (content and origin).
Ich mag Musica von deutschen Komponisten.
I like music by German composers.
'Musica' refers to a specific performance of music, indicating a contextual and temporally defined idea of music.
Die Musica, die gestern gespielt wurde, war beeindruckend.
The music that was played yesterday was impressive.
'Musica' in this context refers to music sheets or written compositions to be used in a performance.