No entiendo el argumento de la película, pero me gusta la música.

Spanish often leaves out subject pronouns when the verb already makes the subject clear. In entiendo, the -o ending tells you it means I understand, so yo is unnecessary.

• No entiendo = I don’t understand
• Yo no entiendo is also possible, but it sounds more emphatic, like I don’t understand.

In Spanish, standard negation usually works by putting no directly before the verb.

• No entiendo = I do not understand
• Entiendo = I understand

This is much simpler than English do not. Spanish does not need an extra helping verb like do here.

Not in the English sense of a quarrel or disagreement. In this sentence, argumento means the plot or storyline of a film, book, or play.

So:

• el argumento de la película = the plot of the film

This is a useful false-friend warning: argumento can sometimes resemble English argument, but here it definitely means plot.

Spanish commonly expresses this kind of relationship with de:

• el argumento de la película = the plot of the film
• literally: the plot of the movie

This is very common in Spanish:

• el final del libro = the ending of the book
• la música de la película = the music of the film

English often uses noun + noun combinations, but Spanish usually prefers de.

Spanish uses definite articles more often than English does.

Here they are natural because we are talking about:

• the plot of a specific film
• the film
• the music in a general but definite sense

Especially with things someone likes, Spanish often uses the article:

• Me gusta la música = I like music
• Me gusta el cine = I like cinema / films

English often drops the in these cases, but Spanish usually keeps it.

Because gustar does not work like English to like. It works more like:

• la música me gusta = the music is pleasing to me

So:

• me = to me
• gusta = is pleasing
• la música = the thing that is pleasing

That is why yo gusto la música is not correct for I like music.

Because the verb agrees with the thing being liked, not with the person.

In me gusta la música:

• grammatical subject = la música singular
• therefore the verb is singular: gusta

Compare:

• Me gusta la música = I like music
• Me gustan las canciones = I like the songs

So the number of the verb depends on what comes after it, if that is the subject.

Me is an indirect object pronoun meaning to me.

So:

• me gusta = it is pleasing to me

Other forms follow the same pattern:

• te gusta = you like
• le gusta = he/she likes, or you like formal
• nos gusta = we like

This structure is one of the most important patterns in Spanish.

Pero means but and connects two contrasting ideas:

• No entiendo el argumento de la película
• pero me gusta la música

So the speaker is saying: I don’t understand the plot, but I do like the music.

It is the normal word for but in this kind of sentence.

Yes. No comprendo el argumento de la película is grammatically correct and means the same thing.

However, entender is often more common in everyday speech. Both are standard Spanish, including in Spain.

• entender = to understand
• comprender = to understand / comprehend

Sometimes comprender can sound a little more formal, depending on context.

Yes, often you can. La trama de la película also means the plot of the film.

There can be small nuance differences:

• trama often focuses more on the sequence of events, the plot itself
• argumento can mean the overall storyline or plot summary

In many everyday situations, learners will hear both.

Because del is a contraction of de + el only.

• de + el = del
• de + la stays de la

Since película is feminine, it uses la:

• de la película correct
• del película incorrect

Compare:

• el final del libro
• la música de la película

Yes, that is also correct. Spanish allows more flexibility in word order than English.

• Me gusta la música is the most neutral and common
• La música me gusta puts a bit more focus on la música

Both mean the same thing, but the first version is usually the default one learners should use.

In this sentence, it will usually be understood as the music of the film, because of the context. The speaker first mentions the film, then says but I like the music.

So even though la música can also mean music in general, here it most naturally refers to the film’s music or soundtrack.

This sentence is standard and natural in Spain and also in most of the Spanish-speaking world. Nothing about it is especially regional.

A speaker in Spain would say it just like this:

• No entiendo el argumento de la película, pero me gusta la música.

The main differences would be pronunciation and accent, not grammar in this case.