Question about beaming in 6/4 and irregular beaming

In 6/4 can I beam by 2/4 + 2/4 + 2/4 or is it strictly 3/4 + 3/4?

And also I didn't find a good explanation of irregular beaming in cases where time signature constantly changing from bar to bar (not alternating but literally changing, e.g., I have four measures, and they're all different in time, e.g., 6/4, 4/4, 5/4, 9/8) in that case, can I beam the 4/4 measure like 1/4 + 1/4 + 1/4 + 1/4 or even 3/4 + 1/4? Especially if it looks more convenient on paper than regular 2/4 + 2/4 and will not distort the entire picture because that bar is one of a kind?

• Why do you need to use 6/4, which is quite specific. Could 4/4 and 2/4 be used instead? In fact, what reasoning makes the changes so specific? You could use other marks and keep everything in the same timing, but accents will give the same feel.
– Tim
Apr 24, 2020 at 18:54
• Well, the piece that I wrote almost entirely in 6/4, no way I can divide it in 4/4 and 2/4. And plus, I wanna finish the idea that I started. Apr 24, 2020 at 20:44
• Have a look at the way 'America' is written, it may provide some ideas.
– Tim
Apr 25, 2020 at 5:47