I’m a fan of Jazz and I especially like it with my early morning commute and in the office while working. The challenge is to find music that is jazz but not the typical smooth jazz yet unintrusive for one’s thinking.
On a whim I asked Siri for “good morning jazz.” To my surprise “she” started playing a playlist of good morning jazz. I think it is perfect for a mellow morning and for unintrusive background music.
You may want to give it a try.
Didn’t work for me either. When I made the request “HomePod Siri” played Nick of Time by Bonnie Raitt. Not jazz, but not a bad song to go along with my first cup of coffee.
I’ll try again when I’m in my car. “iPhone Siri” has always been a bit brighter than her cousin.
I got some calm piano jazz from this. Nice!
“Play quiet jazz” or “play chill jazz” also gets a decent playlist, although it’s a little more horn than I want in the morning.
“Play Charlie Parker” turned out to really set the mood. 
Strange, it worked perfectly for me. I just tested it again. She does give a list of songs/albums but then starts playing the playlist. My exact command is, “Hey Siri, play some good morning jazz.”
Works in Germany:
“Hey Siri, spiele Guten-Morgen-Jazz!”
Her answer:
“Spiele Jazz für beschwingte Stimmung jetzt!” (=“Playing Jazz for a lively mood now!”)
And off she goes…! Nice!
Little Asterisk: Her answer is lousy though. She uses an English sentence structure speaking German. But the music is nice… Also for a nice afternoon!
Nope. This time I got “I didn’t find good morning jazz on Apple Music”. Given HomePod Siri’s history I’m just glad I didn’t get something from AC/DC. My neighbor works nights.
Works perfectly for me, thanks for the tip!
I too like piano bar. 
I got “Good Morning Judge” by 10cc. Not exactly jazz but also not bad. No Bill Evans or Red Garland.
