There’s a few that I listen to that I think accentuate different strengths and aspects of a headphone, but most importantly, you need to like the songs! Listen to your favorite songs.

The Chain - Fleetwood Mac (2004 remaster)

Do It Again - Steely Dan

Kiss - Prince

Sweet Dreams - Eurythmics

One Of These Nights - Eagles

With or Without You - U2

Over The Hills And Far Away - Led Zeppelin

Dark Fantasy - Kanye West

Mountains - Hans Zimmer

I would recommend listening to well mastered music that you already like and listening to the songs back to back on your 109s compared to a random source that isn’t nearly as good. You’ll hear things you didn’t know were even there.