Hello, I have a question, when I am singing a bit high notes, my voice is heard clearly and uniformly mainly with the o or u but if I try to tone down, vowels like e or a sound very scratchy and do not sound not uniform at all. What can i do? Is it due to a problem in my vocal cords?

In the link you can hear the example of my problem

https://drive.google.com/file/d/1rdIdSWWHwf19iXIIroX76I9Ti4XdYAPY/view?usp=sharing

Hi Danny! I encourage you to morph very gradually from a stable vowel (like o or u) to another vowel that's giving you trouble. Example: ohhh---ahhh (very gradually). That way, you're finding a good, relaxed tone on the easiest shape, and then finding a modified version of the vowel you're working on. Hope that helps!