Welcome to the forum! Yes, is is a great story about Rach's compositions. I always try to find a lille about the context of compositions I love to listen to or play, and have uncovered many of these tidbits that give me more appreciation for the music .
Mahler's 'adagietto' was written as a proposal to his fiance. He sent it to her, she recognized the reason and accepted.. love that one! Read about Gershwin's "Rhapsody in Blue' and you will be impressed...
Welcome again!