Lorelei (1974 original Broadway cast and 1973 touring cast)

"The show's cast album was recorded on February 18, 1973, prior to the tryout tour. During eleven months on the road, songs were discarded and new ones added, so when the show reached New York City, it was decided to make a new recording on March 1, 1974. In 2003, Decca Broadway combined the two recordings, resulting in a definitive cast recording that includes all the songs from both."
source: http://en.wikipedia.org/wiki/Lorelei_(musical)