"Never play anything that don't sound right. You might not make any money, but at least you won't get hostile with yourself"

In this quote, Hoagy Carmichael is highlighting the value of remaining real to oneself and not compromising one's worths or beliefs for the sake of monetary gain. He encourages against playing anything that does not feel genuine or real, even if it means compromising possible monetary success. Carmichael recognizes that chasing cash and success can often cause inner turmoil and self-doubt. Instead, he motivates people to prioritize their own happiness and stability, even if it means taking a less profitable course. Ultimately, Carmichael's message is to remain real to oneself and not let external pressures or expectations dictate one's actions.