High Quality Content by WIKIPEDIA articles! obZen is the sixth full-length studio album by Swedish band Meshuggah. It was released in Europe on March 7, 2008, and in the U.S. on March 11, 2008. It contains nine tracks, and a total length of 52 minutes and 25 seconds.Tomas Haake makes his return as the studio drummer for the record after Drumkit from Hell was used on Catch Thirtythree. The album debuted at number 59 in the USA with first week sales of 11,384 copies. In Sweden, the album entered the official album chart at number 16, and in the UK at number 151. A video was filmed for a shorter version of the song "Bleed".