This album is one of three Warner Brothers releases that Frank didn't have much involvement in (thus, the horrid cover art). The other two are Sleep Dirt and Studio Tan.
These three, along with other material from In New York, were originally intended for release as a four-album boxed set called Lather. When WB refused to release them as a boxed set, Frank provided them with the three albums all at once to complete his contract. WB was required to release any material within 6 weeks, whether as a boxed set or individually. Not wanting to release all this material so close together, Warner balked, and re-arranged the material, and released them over the course of 9 months. This prompted a long-running lawsuit that was never resolved to the artist's satisfaction.
If you really want the material present on Orchestral Favorites presented in the context of the original play sequence, buy the Lather 3-CD set, which was eventually remastered and released by Ryco in 1996. Nonetheless, if you're the kind of person who appreciates Zappa only for his humor and rock/guitar material, you will undoubtedly be disappointed by these selections, in or out of context. If your musical tastes are broader, I agree with other reviewers that The Yellow Shark and The Grand Wazoo are better representations of the true symphonic genius of FZ.