Dimecres vaig escoltar la banda a internet, i la seva nova cançó em va agradar molt.

Yes. Dimecres means Wednesday, and in Catalan you can often use the day name by itself to mean on Wednesday.

So:

• Dimecres vaig escoltar... = On Wednesday I listened...

This is very common with days of the week in Catalan. You do not need a word equivalent to on here.

A useful extra note:

• dimecres with a lowercase d is the normal spelling in Catalan unless it begins a sentence.

Vaig escoltar means I listened.

Catalan often forms the past with the so-called periphrastic past, which uses:

• a form of anar (vaig)
• plus the infinitive (escoltar)

So:

• vaig escoltar = I listened
• literally it looks like I go listen, but that is not how it functions in modern Catalan

This is one of the most common past tenses in spoken Catalan.

Some forms:

• vaig escoltar = I listened
• vas escoltar = you listened
• va escoltar = he/she listened
• vam escoltar = we listened
• vau escoltar = you all listened
• van escoltar = they listened

Catalan distinguishes between:

• escoltar = to listen (to), to pay attention to sound
• sentir = to hear, to perceive sound

In this sentence, vaig escoltar la banda means the speaker intentionally listened to the band, so escoltar is the natural choice.

Compare:

• Vaig escoltar la banda = I listened to the band
• Vaig sentir una cançó = I heard a song

In real usage, there can be some overlap, but this distinction is a good rule for learners.

Here la banda means the band. Catalan uses definite articles very regularly, and often more consistently than English.

So:

• la banda = the band

The sentence suggests a specific band, probably one already known in context.

The article agrees with the noun:

• el for many masculine singular nouns
• la for many feminine singular nouns
• els / les for plurals

Since banda is feminine singular, it takes la.

A internet means on the internet or online in this sentence.

The preposition a often covers meanings that English expresses with to, at, or on, depending on context.

So:

• a internet = on the internet / online

You may also encounter:

• per internet = via the internet

Both can appear, though a internet is natural in many contexts.

La seva nova cançó means their new song or his/her new song, depending on context.

Breakdown:

• la = the
• seva = his/her/their
• nova = new
• cançó = song

The possessive seva does not tell you by itself whether the owner is:

• one male person
• one female person
• several people
• or, in context, something like the band

Here, because the previous noun is la banda, the most natural meaning is:

• the band’s new song
• or in natural English, their new song

It agrees with the thing possessed, not with the owner.

In la seva nova cançó, the possessed noun is cançó, which is feminine singular. So the possessive must also be feminine singular:

• el seu llibre = his/her/their book
• la seva cançó = his/her/their song
• els seus llibres = his/her/their books
• les seves cançons = his/her/their songs

So seva is used because cançó is feminine singular.

Yes, adjectives in Catalan often come after the noun, but some common adjectives can appear before it, especially when they express a more general or descriptive quality.

So:

• la seva nova cançó = their new song

Placing nova before the noun is very natural here.

In Catalan, adjective placement can sometimes change nuance:

• before the noun: often more subjective, familiar, or stylistically fluid
• after the noun: often more neutral or contrastive

For learners, the key point is that nova cançó is perfectly normal Catalan.

Because agradar works differently from English to like.

In Catalan, agradar literally works more like:

• to be pleasing to

So:

• em va agradar = it pleased me = I liked it

Breakdown:

• em = to me
• va agradar = pleased / was pleasing

The subject is actually la seva nova cançó:

• la seva nova cançó em va agradar molt
• literally: their new song pleased me a lot
• natural English: I liked their new song a lot

This is one of the most important structures for English speakers to get used to.

Em is the unstressed pronoun meaning to me or me, depending on the verb.

With agradar, it marks the person who experiences the liking:

• em = to me
• et = to you
• li = to him/her
• ens = to us
• us = to you all
• els / els hi = to them, depending on variety and usage

Examples:

• Em va agradar = I liked it
• No em va agradar = I didn’t like it
• Li va agradar = He/She liked it

So in this sentence, em tells us that I am the person who liked the song.

Because the subject is singular:

• la seva nova cançó = their new song

Since cançó is singular, the verb is singular too:

• la cançó em va agradar = the song pleased me / I liked the song

If the subject were plural, the verb would be plural:

• les seves noves cançons em van agradar = I liked their new songs

So va agradar matches the singular subject cançó.

Molt here means a lot or very much.

So:

• em va agradar molt = I liked it a lot / very much

Its placement after the verb phrase is very natural in Catalan.

Compare:

• Em va agradar molt = I liked it a lot
• M’agrada molt = I like it a lot

I simply means and.

So the sentence has two connected parts:

1. Dimecres vaig escoltar la banda a internet
2. i la seva nova cançó em va agradar molt

Together:

• On Wednesday I listened to the band online, and I liked their new song a lot.

Catalan i is pronounced like ee.

It can be. The comma here separates two full clauses:

• Dimecres vaig escoltar la banda a internet
• i la seva nova cançó em va agradar molt

In simpler sentences, Catalan often does not use a comma before i, just like English often does not use one before and. But a comma may appear when the writer wants a clearer pause or when the clauses are longer.

So this punctuation is understandable and acceptable, even if in some contexts you might also see:

• Dimecres vaig escoltar la banda a internet i la seva nova cançó em va agradar molt.

Cançó means song.

The ç is called ce trencada in Catalan. It tells you the letter is pronounced like s, not like a hard k sound.

So:

• ç = s sound

Approximate pronunciation of cançó:

• kan-SO

Also, the final accented ó shows the stress falls on that syllable:

• can-ÇÓ

Without the cedilla, the pronunciation would be different.

Yes, banda can mean several things depending on context, such as side or group/band. In this sentence, because it is followed by la seva nova cançó, the musical meaning is clearly intended.

So here:

• la banda = the band

Context usually makes the meaning obvious.

Yes. There are several natural variations, depending on style and dialect. For example:

• Dimecres vaig escoltar la banda per internet, i la seva nova cançó em va agradar molt.
• Dimecres vaig escoltar aquesta banda a internet, i em va agradar molt la seva nova cançó.
• Vaig escoltar la banda a internet dimecres, i la seva nova cançó em va agradar molt.

These all keep roughly the same meaning, but the original sentence is already completely natural and clear.