JEAN TERRELL: PRE-SUPREMES DEMO [1969/1970]

I'm assuming this rough vocal demo of Jean Terrell singing "How Long Has That Evening Train Been Gone" was recorded as she was first assimilating into The Supremes, as they were preparing for Diana Ross' "Farewell" show in January 1970.  "Evening Train" was originally recorded by Diana Ross & The Supremes on their 1968 Love Child LP.