From house to house..........
Rubbish tunes, although not all of them, especially those stolen from classical composers.
As a practical suggestion Jrjw, instead of witness music why not replace them with stonking melodies such as Bach's; Auf wachet or Sleepers awake in English. If you google it you can compare different performances, orchestral, organ, piano and choral and there you are you have a beautiful new earworm to replace the awful old one.
Try Dvorak's; Song to the moon, from Rusalka and give it the same treatment with different singers.