Chris Kirkley's Sahelsounds blog/label/platform is , and the Sahelsounds Bandcamp page offers dozens of albums for download. Music from Saharan Cellphones is a fine place to begin. Ishilan N Tenere: Guitar Music from the Western Sahel soundtracked the writing of this chapter.
The best way to experience The Ex is to catch them live. Barring that, their site is comprehensive, including a complete gigography! Archive and survive.