The Petrillo/musicians union ban prevented Decca from making a full album of WHERE'S CHARLEY? The single of "Once in Love with amy" backed by "Make a Miracle" was done near the end of the run, mainly becuase Amy ahd been a showstopping number
It's a glaring gap in the Frank Loesser catalogue only partially helped by the London cast album. The show itself got mixed to negative reviews and ran mainly on the strength of Ray Bolger's name. These days most groups opt for the non-musical play which is better, and the musical is seldom staged.
Cast albums are NOT "soundtracks."
Live theatre does not use a "soundtrack." If it did, it wouldn't be live theatre!
I host a weekly one-hour radio program featuring cast album selections as well as songs by cabaret, jazz and theatre artists. The program, FRONT ROW CENTRE is heard Sundays 9 to 10 am and also Saturdays from 8 to 9 am (eastern times) on www.proudfm.com