Read the liner notes! These guys rented a studio and then Petrucci’s wife went into Labor and had to leave. Why not use the studio time for a timeless unaltered jam session? This album is a rare glimpse into a musicians world where these kind of jam sessions are the cosmic building blocks of music. Of course you will hear riffs and whatnot from other places and times. I like that it’s released like it’s recorded. So many diamonds in the rough.