I am a little confused about the relationship between lyrics, composition, composition and arrangement. Please tell me, hero.

First of all, my answer is personal, not professional.

Start with a complete song:

Lyrics: it is the word "zi" in the song;

Composition: it is the tune of a song that you sing with your mouth, which refers to the tune that people sing, also called the main theme;

Arranger: just music accompaniment, such as piano and drums! . . . Wait a minute. . .

So a complete song = lyrics+composition "music"+arrangement.

But the three tasks of writing lyrics, composing music and arranging music do not stipulate who will come first, that is to say, if there are lyrics, find someone to compose music and then find someone to arrange music;

Or if there is a composer, find someone to write the lyrics and then find someone to arrange the music;

There is also, for example, on the Internet, some people arrange some music accompaniment, and some people have feelings after listening to it, and the inspiration in their minds suddenly comes out, so with the ups and downs of music accompaniment, they express their feelings in the form of songs, which is also one of the ways of composing music. If the inspiration is in place, the words will come out at the same time as the main theme, because it is an inner feeling, but some people can't reach this level, which varies from person to person!

Here are some examples for your understanding:

It's time to start: composition is an imaginary tone out of nothing, and lyrics are to express emotional words in your mind. If you have a tune but no lyrics, you are humming. Anyway, how to write lyrics and compose music? This wish comes from your heart, the heart you were trying to create. For example, if you graduate today and are about to leave school, teachers and classmates, then you must feel reluctant to part! As long as you are inspired by this feeling, I am 100% sure that the song "Composition" you wrote is a musical style, with a little nostalgia for the school, teachers and classmates, and a little sadness. Sing your mood at the moment, and it will become a cantata. If I sing at this time, I will sing slowly with a sad accent: I-I'm leaving, my mood, do you understand? Dear teachers, dear classmates and the school where I grew up. . . I will love you forever and ever. . .

Of course, you can't hear the melody I sang live, that is, the composition I made. Did you find it? When composing music, you will feel the new words in your heart, that is, the lyrics. Can you understand the mystery?

Let me give you another example: for example, if you graduate today and are about to enter the society, your long-awaited impulse will come true, and you will soon be able to show your talents in the society. You will have a feeling of leaving the game and heading for struggle. As long as you are inspired by this feeling, I am 100% sure that your song is cheerful and enterprising. Singing your mood at the moment will become a clear song. If I sing, I will sing like this: sing in a light and happy tone: I have successfully completed my studies and am about to enter the society. I want to realize my dream and use what I have learned all my life. . . . .

Of course, you can't hear the melody I sang live, that is, the composition I made. Did you find it? When composing music, you will feel the new words in your heart, that is, the lyrics. Can you understand the mystery?

Summary: Oh, so that's it! What style is the song? It turned out to be the direction I was thinking. The same mood as graduation, but there are two different musical styles. Do you understand the mystery now?

Now let's talk about changing words! If you think your writing is a little bad and want to change it, of course. But if you want to put all your bets first, sometimes you will give up some paragraphs of the song for some more meaningful words, but the increase or decrease of the song and the change of words depend on your personal holistic view. You can also find a professional to help you quantify your co-creation.

Words can be changed, and of course that song can be changed. Simply put, it's OK if you sing a song in a way that doesn't catch the sound or the mouth.

Then there is the lyrics method without music theory: use the recording function of tape recorder or mobile phone to sing and record your feelings, and then improve and enrich them, and an original "Cantata" song is born.

Then dubbing with musical instruments, that is, arranging music, because with the "main theme" of composition, arranging music "accompaniment" will be much easier.

As for the arrangement, I can't help you explain it, because I can't arrange it yet, because I can't do it, I can't use musical instruments, and I can't listen to songs. But when I was composing, the accompaniment of that song was already generated in my mind, but I couldn't get the sound I wanted and make it according to my thinking.

I hope my answer can help you!