Why not have one piece of software that can serve as the Great Tree that supports all of these existing worlds?

I love the idea of Alda and I love this especially.

I understand this project is still very much a WIP, but a random sampling of issues has me wondering to what extent the syntax will support these "existing worlds".

The README says this:

Alda is designed in a way that equally favors aesthetics, flexibility and ease of use, with (eventual) support for the text-based creation of all manner of music: classical, popular, chiptune, electroacoustic, and more!

I'm a heavy Lilypond user, and while I acknowledge that its syntax can be a little arcane, it would be amazing if I could a) import my existing scores into Alda, and b) use the Lilypond syntax I've already learned to compose new scores.

Of course, not everyone will prefer Lilypond. Hence language modes. Perhaps Alda could support an optional language directive (defaulting to the Alda syntax when not specified) at the beginning of the source code (or specified as a flag on the CLI)?