The only lyrics I jotted down were "ready to open every closing door".

It was a very chill song, female singer. Some piano iirc. Lots of rhymes at the end of each line, lots of pretty cool wordplay. There was a whole album of songs with similar style/melody and were how I described this one song.

It was playing at an italian restaurant in Japan but the English was completely fluent with no japanese (or british) accent, so I assume it was an american singer?