[itsme]

Styles like that would be even better.

A little issue could be that part of the lyrics will be missing in ChordPro programs that don't support the latest standard. This is also the case today with e.g. unsupported comment styles or Mike's {highlight:... but much more cumbersome when lyrics or chords are affected.
It would be great if that could be avoided.

What do you think about

Code:

{style loud font Times-Bold size 120% colour red}
...
And [C] then we {loud}all sing{/loud} [F]hello