real time linux-libre kernel?

[Rubén Rodríguez Pérez]

>     i am a composer/musician who works only in GNU/Linux/FLOSS/etc.,
> and i wanted to start using some of the libre distros for music
> making, in particular gNewSense, Gentoo (freed), and Debian (freed).
> however, they do not seem to have any real time linux-libre kernels
> available.

Trisquel -the libre distro I work in- has a 2.6.24-rt kernel -and
gNewSense might have a similar one too-. I've never tried it though.