The product is a DVD lot featuring "Mike Portnoy - In Constant Motion" and "Liquid Drum Theater - Art Of Drumming" by artist Mike Portnoy, directed by Matthew Wachsman. Released in 2007 under the record label Hudson Music, the DVDs are in near mint condition and come in a tall DVD case. The DVDs include a total of 3 discs and are categorized under the genre of Special Interest-Instructional, with a focus on music videos showcasing Portnoy's performance skills in the genre of Prog Rock.
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