في المساء يسمع صديقي موسيقى في البيت.

Because Arabic often puts a time expression first to set the scene.

So في المساء means in the evening, and starting with it is very natural, just like English can say:

In the evening, my friend hears/listens to music at home.

This does not change the basic meaning; it just gives the time first.

In Arabic, parts of the day are very often used with الـ in common time expressions:

• في الصباح = in the morning
• في المساء = in the evening
• في الليل = at night

So في المساء is a standard expression. It does not necessarily mean one specific evening; it can simply mean in the evening as a general time period.

The basic meaning of يسمع is he hears.

With something like music, English often prefers listens to, but Arabic can still use يسمع موسيقى in a simple sentence like this.

A more explicit way to say listens to music is:

يستمع إلى الموسيقى

So the difference is roughly:

• يسمع موسيقى = hears / is hearing music, sometimes understood as listens to music in context
• يستمع إلى الموسيقى = listens to the music, more explicitly

In Arabic, the verb itself often shows the subject.

In يسمع, the beginning يـ marks third person masculine singular, so the verb already means:

he hears

That means Arabic does not need a separate word for he here.

You could add هو, but that would usually be for emphasis, not because it is required.

It is made of:

• صديق = friend
• ـي = my

So:

صديقي = my friend

Arabic usually shows possession with a suffix attached to the noun, instead of using a separate word like my.

Because Arabic normally attaches possessive pronouns directly to the noun.

For example:

• صديقي = my friend
• بيتي = my house
• كتابي = my book

So instead of a separate word before the noun, Arabic often uses an ending like ـي.

Because it is being used in a general, indefinite sense: music in general, not a specific piece of music.

So:

• موسيقى = music
• الموسيقى = the music

In this sentence, موسيقى is the more natural choice if the meaning is general.

Because في means in or at, and Arabic uses it separately for each prepositional phrase.

So the sentence has:

• في المساء = in the evening
• في البيت = in the house / at home

Repeating في is completely normal.

Also, في البيت often sounds very natural in English as at home, not only in the house.

Yes. Arabic word order is flexible.

This sentence uses a very natural order:

time + verb + subject + object + place

But other orders are also possible, for example:

• صديقي يسمع موسيقى في البيت في المساء
• في البيت يسمع صديقي موسيقى

The core meaning stays similar, but the emphasis changes. The original sentence sounds neutral and natural.

A simple breakdown is:

• في المساء = time phrase
• يسمع = verb
• صديقي = subject
• موسيقى = object
• في البيت = place phrase

So literally, the structure is something like:

In the evening hears my friend music in the house

That sounds strange in English, but it is normal Arabic structure.

In fully vocalized Arabic, the sentence would show case information more clearly, especially after prepositions:

• في المساءِ
• في البيتِ

After في, the noun is in the genitive case.

So:

• المساءِ is genitive after في
• البيتِ is genitive after في

Also:

• صديقي is the subject, so it is nominative
• موسيقى is the object, so it is accusative

In normal Arabic writing, these short vowels are usually not written, so learners often have to infer them from grammar.

It can mean either, depending on context.

In a sentence like this, في البيت is very naturally understood as:

at home

So even though the literal meaning is in the house, the most natural English translation may be at home.

Yes.

In Arabic, the subject often comes after the verb. So in:

يسمع صديقي موسيقى

the subject is still صديقي, even though English would normally put the subject first.

This is one of the most common sentence patterns in Arabic.