Se me pasa el enfado cuando escucho música.

In this expression, pasarse often means to go away, wear off, or pass in the sense of an emotion, pain, illness, etc. So Se me pasa el enfado is not about something physically passing by; it means my anger goes away or I get over my anger.

This is a very common Spanish way to talk about temporary states ending:

• Se me pasa el dolor. = The pain goes away.
• Se me pasan los nervios. = My nerves calm down.

Here, se is part of the verbal expression. It helps form the pattern pasársele algo a alguien, which is used to say that something goes away for someone.

So in:

• Se me pasa el enfado

the structure is roughly:

• el enfado = the thing that goes away
• me = for me / from me
• se pasa = goes away, wears off

It is not really the same as a straightforward reflexive like me lavo (I wash myself). It is better to learn pasársele as a set expression when talking about feelings or states disappearing.

Me is an indirect object pronoun meaning to me or for me.

Spanish often expresses this idea as if the feeling is something that passes away from someone:

• Se me pasa el enfado = literally something like The anger passes from me / goes away on me
• natural English: My anger goes away / I calm down

So me marks the person affected.

Because the verb agrees with the subject, and the subject here is el enfado.

So:

• el enfado = singular
• therefore pasa = singular

The sentence is structured more like:

• El enfado se me pasa cuando escucho música.

Even though English often says I get over my anger, Spanish is treating the anger as the thing doing the grammatical action.

Compare:

• Se me pasa el enfado. = singular subject
• Se me pasan los nervios. = plural subject

Spanish often uses the definite article (el, la, los, las) where English would use a possessive like my.

So:

• Se me pasa el enfado literally has the anger
• but the meaning is naturally my anger

Because me already shows whose anger it is, el sounds perfectly natural. Saying mi enfado is possible in some contexts, but here el enfado is the more idiomatic choice.

Yes. Enfado can refer to anger, annoyance, or being upset, depending on context.

In Spain, enfado and enfadarse are very common:

• Tengo un enfado tremendo.
• Se ha enfadado conmigo.

It does not always sound as strong as rage. Sometimes it is closer to annoyance or being cross.

Because this sentence refers to something habitual or generally true: whenever I listen to music, my anger goes away.

With cuando, Spanish uses:

• present indicative for habitual actions or things seen as real
• subjunctive for future or not-yet-real situations

So:

• Se me pasa el enfado cuando escucho música. = whenever I listen to music
• Se me pasará el enfado cuando escuche música. = my anger will go away when I listen to music

Because Spanish usually omits subject pronouns when they are not needed. The verb ending -o in escucho already tells you the subject is I.

So:

• cuando escucho música = when I listen to music

You could say cuando yo escucho música, but that usually adds emphasis or contrast, for example:

• Cuando yo escucho música, me relajo, pero mi hermano no.

Yes, that is also possible and quite natural.

Both can work:

• Se me pasa el enfado
• Se me quita el enfado

They are very similar in meaning: my anger goes away.
Often:

• pasarse can sound like a state wears off / passes
• quitarse can sound like it is removed / taken away

In everyday speech, both are common.

Both are possible.

• Se me pasa el enfado is very natural and common.
• El enfado se me pasa is also correct, but it puts more focus on el enfado.

Spanish is more flexible than English with word order. In this sentence, starting with se me pasa sounds very idiomatic, especially when introducing the effect first and the subject after.

Yes, very often. This is a productive pattern in Spanish.

Examples:

• Se me pasa la tristeza cuando hablo con mis amigos.
• Se me pasan los nervios después de unos minutos.
• Se me pasa el sueño con un café.
• Se me pasa el dolor si descanso.

So a useful pattern to learn is:

Se me pasa + noun
= ... goes away / wears off for me

Yes, it sounds very natural in Spain, especially because of enfado. In many parts of Latin America, people might more often use words like enojo or rabia, depending on the country.

For example, in Spain:

• Se me pasa el enfado.
• Estoy enfadado.

In other regions, you may hear:

• Se me pasa el enojo.
• Se me quita la rabia.

The grammar is the same; the vocabulary can vary by region.