To write music, you need to study notes more closely.

First, we must understand that notes and tones with semitones are the same thing.

There are 7 tones (C D E F G A H/B) and 5 semitones (C# D# F# G# A#) (Image 2)

But here's what's interesting: two notes with the same notation, but one is higher in pitch and the other lower. (Image 3) How can this be?

Observant readers have already noticed that on the notes, after the tone designation, there is a number. This number indicates the actave number (Image 4). Each actave contains all tones and semitones (C C# D D# E F F# G G# A A# H/B). The higher the actave, the higher the pitch. To move a note into the next actave, it must be raised by seven steps. Actaves expand the possibilities for writing music, greatly increasing the variety of notes.