I think it's about both things - I remember hearing Amanda talk about how she was watching Baby Dee (the "angelic beating girl") playing at a venue and thinking it was like being at a church service, with all these believers in music gathered round. And since being in a church is often a place to commune with loved ones you've lost, music serves the same purpose with Ben ("he left his keys with you" - as in watching a musician perform opens the door to feeling close to Ben again). I think the parts about it being 'a long way out' and 'back into the end of harmony' are about how difficult it is to leave the music and the perfection of a concert behind and go back into real life, where there's no harmony, musical or literal. And that makes sense of the title 'The Living Room', which is of course a music venue but also the place where you feel like you're truly living and where you feel most peaceful. Leaving the venue is like leaving the comfort of your living room or house to go outside into the much scarier real world. The "if I never leave this chair, maybe I can go with you" line seems to say that she feels like if she keeps trying to prolong the concert and the music forever, never leaving, maybe she'll be able to go with Ben or get him back. Of course she can't - even if we try and "pour the magic in our coats", performance is so ephemeral that we can't stay there forever.
I think it's about both things - I remember hearing Amanda talk about how she was watching Baby Dee (the "angelic beating girl") playing at a venue and thinking it was like being at a church service, with all these believers in music gathered round. And since being in a church is often a place to commune with loved ones you've lost, music serves the same purpose with Ben ("he left his keys with you" - as in watching a musician perform opens the door to feeling close to Ben again). I think the parts about it being 'a long way out' and 'back into the end of harmony' are about how difficult it is to leave the music and the perfection of a concert behind and go back into real life, where there's no harmony, musical or literal. And that makes sense of the title 'The Living Room', which is of course a music venue but also the place where you feel like you're truly living and where you feel most peaceful. Leaving the venue is like leaving the comfort of your living room or house to go outside into the much scarier real world. The "if I never leave this chair, maybe I can go with you" line seems to say that she feels like if she keeps trying to prolong the concert and the music forever, never leaving, maybe she'll be able to go with Ben or get him back. Of course she can't - even if we try and "pour the magic in our coats", performance is so ephemeral that we can't stay there forever.