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Scabdates is the second official live recording from the band The Mars Volta. It was released on November 8, 2005 and features music recorded between May 2004 and May 2005 during the tours in support of De-Loused in the Comatorium and Frances the Mute. In 2011, NME magazine named it one of the 50 greatest live albums of all time. The "And Ghosted Pouts" section of "Take the Veil Cerpin Taxt" was used in the film Get Him to the Greek.

Scabdates is peculiar as only three of the band's songs are represented, consisting mostly of expansions on musical themes which appear elsewhere in their work, or entirely new segments altogether. For example, the lengthy exposition on "Cicatriz", when combined with its introduction "Haruspex", comprises over 48 minutes of the disc; its lengthy jam incorporating themes which would later be used in "Cassandra Gemini" (the performance excerpted here was recorded on May 12, 2004, almost a year before Frances the Mute was released). Oddly enough, the Scabdates version of "Concertina" is shorter than its studio counterpart released on the Tremulant EP. The album ends with Cedric thanking the audience by telling them to "go home and take a bath."

Portions of the album include overdubbing and tape effects that were not part of the original live recordings. "Abrasions Mount the Timpani" features field recordings of mewling babies and airliner announcements that Omar recorded on the road, while "Cicatriz" incorporates an eight-minute psychedelic sound collage of other Mars Volta live performances (notably, performances of "Eunuch Provocateur" and "Cassandra Gemini"), alongside field recordings of the band and others talking and laughing. The album, like many live albums before it, was also mixed to sound as if it came from one performance.

A few years after the release of Scabdates, Rodriguez commented on the compilation of the album:

I listened to my favorite live records, and said, "Okay, that's nice. What would I want as a fan?" When I was a kid, I always wanted little moments about the band on tour, so I could imagine them in my head. You hear our live record, and it starts with sound check and our technicians speaking about what's wrong with the microphone. And then there's us backstage, and then it goes into the concert, and then in the middle of a song, I put in some conversations we had on the tour bus. All these things are really appealing to me. A lot of people who were upset said, "This is not a live album. It includes all this other bullshit. And it has overdubs!" It has no overdubs, it was just mixed in a creative way.

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