Try making it with "a" - if thing can be "a thing" then it could be "the thing" but if it can't be "a thing" it definitely can't be "the thing" either.
With context these can mean different things. You might also play a piano, or hire either a player piano, or a piano player.
If you are answering which instrument you play, it's the former, but if we are talking the profession it's the latter, because you don't say then that you play a piano.
theanonymousone · · focus · HN ↗
Pre-LLM I was joking that real AI is whatever can make that decision correctly 100% of times.
geocar · · focus · HN ↗
rom1v · · focus · HN ↗
geocar · · focus · HN ↗
If you are answering which instrument you play, it's the former, but if we are talking the profession it's the latter, because you don't say then that you play a piano.