When Focus 3 was released "House of the King" was added as the last track even though neither Bert Ruiter nor Pierre van der Linden played on it as it was in fact the version recorded in 1969 for the In and Out of Focus album.

When the double album was released, Van Leer and Akkerman were still producing much of their most seminal work. But critics claimed that the album was not as cohesive as Moving Waves and the material did not support the length of a double album. However, the album contained the Van Leer-penned "Sylvia" which become a major hit in many markets outside the U.S. and topped the charts for several weeks in Great Britain.