Coding in the style of Arvo Pärt and... some questions!

So, here is my question :

maybe you noticed that

choose ([a, b, c, d, e, f, g, h, flower])

I discovered that sonic pi just plays the functions in that order, but I guess you understand what I tried there ^^
Is there anyway to do it ?
Help is really welcome.
I’ll be posting the new versions here as soon as I can work on it.

Thanks a lot !