O.S.T. proved to be even more complex than the group's first albums, using a larger variety of samples (culled from vinyl collected all over the world), and the samples were pieced together in more intricate ways.
The track "The Dig" also apparently seemed to contain a negative reference to Madlib (who also referred to himself as "Tha Loopdigga") in the lyrics "fuck a loop digger in my city, man, just stay home", and many on the L.A. music scene were incensed.