How to write a song? (relatively simple)

You need to learn some basic music theory. Then, of course, you need to basically master an instrument. If you have the skills, it is recommended to practice piano or electronic keyboard. If not, guitar will also work. First let’s talk about how to write songs. Composing only requires a feeling. Don't force yourself to write something within a certain period of time. Focus on experiencing life and using music to express your emotions and insights in life. Then, you have to take the time to write the melody into notation, which requires a certain amount of sight-singing and ear-training skills. The music at this time is not complete, so don't worry, just play it on the guitar and listen to it, and then you will naturally have some feelings. Be careful not to transpose. People who are new to writing songs like to transpose and think that this kind of transposition is allowed. It is possible to transpose, but most people do it ridiculously, and some even use it indiscriminately because they can't tell the difference between transposition and off-key and the rules of transposition. It is recommended that you strengthen your music theory and understand tonality and some concepts (major and major keys, harmonic major keys, chord names, off-key rules...). By combining the fragments and filling them in, the main melody of a song is completed. The next step is to compose the music, that is, add chords. First you need to master some chords. For example, the main chord (starting on the first note), the subordinate chord (starting on the fourth note), the dominant chord (starting on the fifth note), and the dominant seventh chord of each major key. These four chords are the backbone of every piece of music. Next, you need to understand some rules. For example, the first chord of each piece of music must be the tonic chord, and the last three chords are generally T chords, dominant chords and tonic chords. Then, the middle part requires the cultivation of musicality. You need to select the corresponding chord accompaniment through the changes of your own melody. This should be practiced slowly. If you can't do it quickly at the beginning, you can try one by one to see which one sounds better. But there are rules, that is, the first note of each syllable must belong to that chord. Experience it for yourself and I believe you will be able to use chord accompaniment soon. The addition of chords is very demanding on the ears. If you can listen to music, it shouldn't be a problem. If not, I suggest you practice your ears more, which is also very important for composing. Next is the fill-in. For example, if you use piano accompaniment, you may feel that it is too monotonous to always use consistent arpeggios or chords. You must learn to change the rhythm pattern at the appropriate time and stop the accompaniment at the appropriate time to highlight the singer. In my personal opinion, although I can also play the guitar, I still feel that the piano accompaniment is more beautiful and has richer changes (of course, it may also be because my guitar skills are so bad...). There are many piano accompaniment rhythm patterns, you can learn them briefly. If you are simply accompaniment to pop music, you don’t need to have deep piano skills. If it's a guitar, just add chords, and the melody is completed by the singer. The guitar fills are more abundant. Of course, as a complete song, it also needs an intro, interlude and ending. Now that you can write songs, I guess you should have no problem writing these. By combining the above, I believe you will be able to complete a simple song better. If you want something more complex, you can play multiple accompaniments and combine them together. It is highly recommended to use the software cooledit. Nuendo is more professional, but its operability is relatively high and it requires too many plug-ins.