Dave, I’ve been listening to jazz a lot more in the last several years for a lot of reasons, not the least of which is the sheer talent the players demonstrate on their instruments (vocalists as well). Jazz also reminds me about the importance of freeing myself up, improvising, feeling my way through the writing process. And a lot of that derives from what you say: from the heart.
If you like the jazz series, there’s another I have: Songwriters on Songwriting. You can check it out here.