if an object is in the ..........., it is behind the main thing you are looking at. Sounds you can hear but are not listening to are in the ...........
background music | background noise | in the background
a ........ tune, slogan, phrase etc. is one that is very easy to remember
catchy
.....is something you use to stick things together so they can’t move. If you say that your headphones are ......to your ears, you mean that they are always there and don’t move. Or if you say you are ......to the TV or your seat, you mean
be glued to something