I bought a Gregorian Chant album in the mid-1970s that is no longer available. I can still picture it in my mind and hear it in my head, and it still brings me peace. I'd love to find that particular album, but in the absence of that I'll offer this from Spotify:
Suite for Flute and Jazz Piano:
Teaser and the Firecat:
Kind of Blue:
Laura Nyro, The First Songs
Have you heard of any of them?