Fixed Do is simply the same as letter names but with different names, and Movable Do with do-based minor is simply the same as scale degree numbers but with different names. Movable Do with la-based minor covers a territory that has no other set of labels already tailor-made for it.
Which is better movable do or fixed do?
The Kodaly method uses Movable “Do”. Advantages to Fixed Do: Fixed “Do” can reinforce absolute pitch. ... By learning Fixed “Do”, they begin with “Do, Re, Mi, Fa, So, La, Ti” instead of “C, D, E, F, G, A, B”. This is more intuitive, and so it is easiest to learn in the beginning.
What is the point of fixed do?
Advantages of Fixed Do
on and on… no matter what key you're in. In other words, Fixed Do swaps out the letter names for the Solfege syllables. Solfege enthusiasts argue that the Solfege syllables make musical notes easier to remember and easier to sing (even more so than the letter names).
What is a moveable do?
The movable do system is a fundamental element of the Kodály method used primarily in Hungary, but with a dedicated following worldwide. In the movable do system, each solfège syllable corresponds not to a pitch, but to a scale degree: The first degree of a major scale is always sung as "do", the second as "re", etc.