song question s3 e14 please help!!

hello lovely imdb peeps..
i have just been watching this in bits & pieces whilst unwell as it is quite sweet..
well.. anyway.. i need some help regarding a song in the episode entitled 'caroline and the quiz show' from series 3.. i believe episode 14.
some episodes are up on yt in pretty bad quality but at about 14:45 into the episode the song is playing on a cassette tape in caroline's apartment as richard walks in.. i have seen some talk of bach & certain brandenburg concertos.. but i do not hear it.. if somebody with a discerning ear could kindly help.. please do.. you would need to listen to the clip as i have searched already on da interwebs.. fansites are pretty bad.. sadly.. as it was quite a good show especially the first three series.. ^_^
anyway.. thank you kindly in advance for any help to what this song may be..
kind regards & good vibes to all..

:::: love and peace ::::