This video teaser is done with the 55 drawings of the 55 different covers for all the copies of the limited edition double CD "Es Prohibido Cantar". It's a selection of the band's live acts from 2005 to 2015 and contains unreleased material.
The double CD is self released on a very limited edition of (indeed) 55 copies, each of them featuring these unique drawings by band member Matteo Uggeri, and an extensive booklet with a short story which accompanies each track.
Each copy is assembled manually by the band and sold only via their website, the Bandcamp page (no iTunes, no Spotify, no digital store of any kind). But of course you can buy them at their concerts.