Ta nuta jest za wysoka dla mojego głosu.

Because nuta is a feminine noun in Polish.

Polish demonstratives agree with the gender of the noun:

• ten = masculine
• ta = feminine
• to = neuter

So:

• ta nuta = this note

You can see the same pattern in other examples:

• ta książka = this book
• ten stół = this table
• to okno = this window

Because adjectives in Polish must agree with the noun they describe in gender, number, and case.

Since nuta is:

• feminine
• singular
• nominative

the adjective also has to be feminine singular nominative:

• wysoka

Compare:

• ten dźwięk jest za wysoki = this sound is too high
• ta nuta jest za wysoka = this note is too high
• to brzmienie jest za wysokie = this tone/sound is too high

Here za means too.

So:

• za wysoka = too high

This is a very common pattern in Polish:

• za drogi = too expensive
• za trudne = too difficult
• za późno = too late

Important: in this sentence, za is not being used as a preposition. It is acting like an adverb/intensifier meaning excessively / too.

Polish works similarly here. Wysoki / wysoka / wysokie can be used for high pitch as well as physical height.

So:

• wysoka nuta = a high note
• niska nuta = a low note

Even though wysoki often means physically tall/high, it is also perfectly normal for sound and pitch.

Because dla requires the genitive case.

So both mój and głos have to change into genitive forms:

• mój → mojego
• głos → głosu

That gives:

• dla mojego głosu = for my voice

This is a very useful rule to remember:

• dla + genitive

Other examples:

• dla mnie = for me
• dla dzieci = for children
• dla nauczyciela = for the teacher

It actually is spelled głosu. The key letter is ł.

In modern Polish, ł is pronounced roughly like English w.

So:

• głos sounds roughly like gwos
• głosu sounds roughly like gwo-su

A few pronunciation notes:

• gł ≈ gw
• o is like o in for (depending on accent)
• s is a clear s
• u is like oo in food

There is one: mojego.

In Polish, possessives like my, your, his, etc. also change form depending on gender, number, and case.

The base form is:

• mój = my

But after dla, you need genitive, so it becomes:

• mojego

So:

• mój głos = my voice
• dla mojego głosu = for my voice

Yes. That is also correct.

Both mean too high:

• za wysoka
• zbyt wysoka

The difference is mostly in style:

• za is very common and natural in everyday speech
• zbyt can sound a bit more formal or careful

So in normal conversation, za wysoka is often the more natural choice.

In the present tense, Polish normally does use forms of być (to be) in sentences like this.

So:

• Ta nuta jest za wysoka = This note is too high

You may sometimes hear jest omitted in very informal, emotional, or elliptical speech:

• Ta nuta za wysoka!

But that is less neutral and less standard. For a normal full sentence, jest is the expected form.

Yes, Polish word order is fairly flexible.

The neutral order here is:

• Ta nuta jest za wysoka dla mojego głosu.

But you might also hear:

• Dla mojego głosu ta nuta jest za wysoka.
• Ta nuta dla mojego głosu jest za wysoka.

These variations change the emphasis slightly:

• starting with dla mojego głosu emphasizes for my voice
• starting with ta nuta emphasizes this note

Still, the original version is very natural and straightforward.

Yes. Nuta is the normal word for a musical note.

Depending on context, Polish can also use other words such as:

• dźwięk = sound
• ton = tone
• brzmienie = sound/timbre

But if you are talking about singing or music and mean a specific note, nuta is the most direct choice.

Because nuta is the subject of the sentence, so it stays in the nominative case.

The structure is:

• Ta nuta = subject
• jest = verb
• za wysoka = description of the subject
• dla mojego głosu = prepositional phrase

Since ta nuta is the thing being described, it remains nominative.

A rough English-style pronunciation guide would be:

ta NOO-ta yest za vi-SO-ka dla ma-YE-go GWO-su

A few details:

• ta = tah
• nuta = NOO-ta
• jest = yest
• wysoka = vi-SO-ka
  
  • wy is often roughly like vi for English speakers
• dla = dlah
• mojego = ma-YE-go
• głosu = GWO-su

This is only approximate, but it can help as a starting point.