There are a handful of LPs that I turn to depending on mood.
When stressed I will play the Sveshnikov Russian recording of the Rachmaninoff "All night vigil". The Vespers portion of that truly can calm the soul. Similarly the Ockeghem Requiem.
When I need catharsis - Mahler 2, I have several versions but the Levine CSO is my LP of choice.
In a reflective mood the Mercury Starker cello suites are a frequent choice.

