Track 4 on 'Customs' is a version of 'Reach Out I'll Be There' - not sure who's performing it, though. Maybe Jurgen Hermann and the Grosses Tanzstreichorchester Des Deutschlandsenders?
The Deutsches Rundfunkarchiv holds a considerable number of light orchestral recordings from East German radio, so I'd bet they have it - the good thing about German broadcasters is they very rarely get rid of anything, so there's a reasonable chance it's there somewhere.