Warthur This is the followup to XM, and is another live-in-the-studio recording by Porcupine Tree for XM radio in Washington D.C., this time from 2003. The original XM leaned very strongly on material from In Absentia, recorded as it was early in the process of touring and promoting that album.

This album ends up being a somewhat more varied prospect, as well as a highly interesting one - because the first XM used so much In Absentia material, here they go lighter on it (though it's not absent - there's a nice version of Trains here) but fill out the setlist with tunes from a more diverse range of releases. These go as far back as Up the Downstair, but the band also lean heavily on Lightbulb Sun for these performances.

What really gets interesting is that the band are still very much in In Absentia mode when they are playing this material - adding an extra dose of edge and heaviness to the proceedings, with the result that you get a somewhat fresher take on familiar stuff here.

The end result is a rather unique setlist - certainly not something the band would have put together if they'd had a completely free hand in song choice, but because so much of their recent material had been already used on the first XM session and they wanted to avoid redundancy, we ended up with this intriguing, one-of-a-kind performance.