Saya sama sekali tidak ingat lirik itu.

Sama sekali strengthens the negation. In Saya sama sekali tidak ingat lirik itu, it means something like not at all, absolutely not, or completely not.

So:

• Saya tidak ingat lirik itu = I don’t remember those lyrics / the lyrics.
• Saya sama sekali tidak ingat lirik itu = I do not remember the lyrics at all.

It adds emphasis and makes the statement stronger.

Malay uses:

• tidak to negate verbs and adjectives
• bukan to negate nouns, noun phrases, or for contradiction/correction

Here, ingat is a verb meaning remember, so tidak is the correct negator:

• tidak ingat = do not remember

Using bukan here would be ungrammatical in normal usage.

In standard Malay, sama sekali usually comes before the negated verb phrase or after it in some constructions, but tidak sama sekali ingat is not the natural order here.

The common pattern is:

• sama sekali tidak + verb/adjective

So:

• sama sekali tidak ingat = not remember at all

This is the most natural phrasing in formal or neutral Malay.

Yes. That is also natural and means the same thing.

Compare:

• Saya sama sekali tidak ingat lirik itu.
• Saya tidak ingat lirik itu sama sekali.

Both mean I don’t remember the lyrics at all.

The second version places the emphasis at the end, which can sound very natural in speech. The first version is also very standard and clear.

Ingat means remember.

In different contexts, it can also mean:

• to recall
• to keep in mind
• to be aware of

In this sentence, it clearly means to remember / recall:

• ingat lirik = remember the lyrics

So the speaker is saying they cannot recall the words of the song.

Lirik can often function like a collective noun, similar to English lyrics.

Even though English usually uses lyrics in the plural, Malay commonly just says lirik for the words of a song.

So:

• lirik itu can mean those lyrics or the lyrics

Malay does not mark plural in the same obligatory way English does, so you do not need a special plural form here.

In Malay, demonstratives such as ini (this) and itu (that) usually come after the noun.

So:

• lirik itu = that lyric / those lyrics / the lyrics
• lagu itu = that song
• orang itu = that person

This is normal Malay word order. English puts that before the noun, but Malay usually puts itu after it.

It depends on context.

In Malay, itu can function as:

• that / those
• and sometimes something close to the, when referring to something already known in context

So lirik itu could be understood as:

• those lyrics
• the lyrics
• sometimes that lyric, if context clearly refers to one line

In this sentence, the most natural English meaning is probably the lyrics or those lyrics.

Yes, in many contexts Malay allows the subject to be omitted if it is already clear.

So you might hear:

• Sama sekali tidak ingat lirik itu.
• Tak ingat lirik itu langsung.

However, including saya makes the sentence clearer and more complete, especially for learners or in careful speech.

It is neutral to somewhat formal.

Reasons:

• saya is neutral/polite for I
• tidak is the full standard form of not
• sama sekali sounds standard and emphatic

In casual conversation, many speakers might say:

• Saya tak ingat lirik itu langsung.
• Aku tak ingat lirik tu langsung.

These are more informal.

Yes, often you can.

A very common informal-to-neutral alternative is:

• Saya langsung tidak ingat lirik itu.
• Saya tak ingat lirik itu langsung.

Langsung and sama sekali can both mean at all in negative sentences.
However:

• sama sekali often sounds a bit more formal or emphatic
• langsung is extremely common in everyday speech

Both are useful to learn.

Malay does not use a helping verb like English do for negation.

English:

• I do not remember

Malay:

• Saya tidak ingat

Malay simply places the negator tidak before the verb.

So the structure is more like:

• I not remember

This is one of the big structural differences between English and Malay.

Yes, but the tone changes.

• saya = neutral, polite, standard
• aku = informal, personal, used with friends, family, or in relaxed contexts

So:

• Saya sama sekali tidak ingat lirik itu. = neutral/polite
• Aku sama sekali tak ingat lirik itu. = more casual

Use aku only when the social context fits.

Yes, it is grammatical and natural.

It sounds like a clear, emphatic way to say that the speaker cannot remember the lyrics at all. A native speaker might also choose a more conversational version, such as:

• Saya tak ingat lirik itu langsung.
• Saya langsung tak ingat lirik itu.

But your original sentence is perfectly good Malay.