Við notum tímamælinn til þess að spila hraðar.

Notum is the 1st person plural present tense form of the verb að nota (to use).

So:

• ég nota = I use
• þú notar = you use
• við notum = we use

Because the subject is Við (we), the verb has to be notum.

Tímamælinn is in the accusative singular definite.

Breakdown:

• tímamælir = a timer / metronome
• tímamælinn = the timer / the metronome

The verb að nota usually takes a direct object, and that object is often in the accusative. So:

• Við notum tímamæli = We use a timer / metronome
• Við notum tímamælinn = We use the timer / metronome

The ending -inn is the definite article attached to the noun, like English the.

This is because many Icelandic masculine nouns change slightly when the definite article is added.

For tímamælir:

• indefinite nominative: tímamælir
• definite accusative: tímamælinn

The -ir ending of the dictionary form does not simply stay unchanged before the article. This kind of change is normal in Icelandic noun inflection. So this is something you usually learn as part of the noun’s declension pattern.

Til þess að means in order to or simply to, when expressing purpose.

So:

• Við notum tímamælinn til þess að spila hraðar. = We use the metronome in order to play faster.

This is a very common Icelandic structure for purpose.

Yes. In many situations, til að is a shorter and very common alternative to til þess að.

So these are both natural:

• Við notum tímamælinn til þess að spila hraðar.
• Við notum tímamælinn til að spila hraðar.

The longer version can sound a bit more explicit or formal, but both are standard.

Þess is the genitive form of það (that/it).

Historically and grammatically, til takes the genitive, so til þess literally contains something like to/of that. But in modern Icelandic, til þess að is best learned as a fixed expression meaning in order to.

So you usually do not need to analyze it every time while speaking; just remember the whole chunk:

• til þess að + infinitive

Because after til þess að, Icelandic normally uses the infinitive.

So:

• að spila = to play

This works the same way English uses to + verb:

• in order to play
• til þess að spila

If you used spilum, that would mean we play, which would not fit this structure.

Because here the word describes how someone plays, not what kind of person or thing they are.

• hraður = fast (adjective)
• hraðar = faster (adverb/comparative)

In the sentence, spila hraðar means play faster. It modifies the verb spila, so Icelandic uses the adverbial comparative form.

Compare:

• Hann er hraður. = He is fast.
• Hann spilar hraðar. = He plays faster.

Yes. Hraðar means faster.

It is the comparative form used adverbially here:

• hratt = fast
• hraðar = faster

So:

• spila hratt = play fast
• spila hraðar = play faster

Because Icelandic, like English, can use a comparative without stating the second part if it is understood from context.

So spila hraðar can mean:

• play faster
• play more quickly
• play at a faster tempo

If you wanted to add the comparison explicitly, you could do so in a longer sentence.

The basic order here is:

• Við = subject
• notum = verb
• tímamælinn = object
• til þess að spila hraðar = purpose phrase

So the structure is basically:

Subject + Verb + Object + Purpose

That is very similar to normal English word order in this kind of sentence.

Normally, Við is included.

Unlike some languages where subject pronouns are often dropped, Icelandic usually keeps them:

• Við notum... = We use...

You generally would not leave out Við in an ordinary standalone sentence like this.

These are two letters that often confuse English speakers:

• þ is like the th in thin
• ð is like the th in this (though in Icelandic it can be weaker depending on position)

In this sentence:

• Við: the ð is like a voiced th
• þess: the þ is like the th in thin
• hraðar: the ð again is a voiced th

So a rough guide would be:

• Við ≈ vith / with-like, but not exactly English with
• þess ≈ thess
• hraðar ≈ hrah-ther

That is only approximate, but it helps at first.

Að spila often means to play, especially:

• to play music
• to play an instrument
• sometimes to play a game or sport, depending on context

In this sentence, with tímamælinn and hraðar, the meaning is most naturally about playing music faster.

So the full sentence sounds like something such as:

• We use the metronome in order to play faster.

Pretty closely, yes:

• Við = we
• notum = use
• tímamælinn = the metronome / timer
• til þess að = in order to
• spila = play
• hraðar = faster

So a very literal version is:

We use the metronome in order to play faster.

That said, in natural English you might simply say:

We use the metronome to play faster.

Yes, að by itself can also mean to, but it has several different jobs in Icelandic, so context matters.

For example:

• before an infinitive: að spila = to play
• in a purpose expression: til þess að spila = in order to play

So in this sentence:

• the first að is part of til þess að
• the verb that follows, spila, is in the infinitive

It helps to see til þess að as one unit introducing purpose, rather than trying to translate each að separately every time.