I just made a playlist last night and got the chance to test it out today...it did some things really well (pointing out a somewhat anemic bass on the Shure 310), and some tracks I'm a bit doubtful really need to be on there, but I think I'll leave for the familiarity:
Air - La Femme d'Argent
Ananda Shankar - Streets of Calcutta
Antibalas Afrobeat Orchestra - Indictment
Bill Evans - Gloria's Step
Bobby McFerrin - Blackbird
Canadian Brass - Bach: Fugue in g
Josh Roseman Unit - LDSN 2.0
Led Zeppelin - Stairway to Heaven
Mark Deutsch - Avodah
Mehta/VPO - Mahler 2, Mvt. 5
Sreteniye - O My Soul, Rise!
Horenstein/LPO+ - Mahler 8, Mvt. 2 "Alles Vergangliche"
Buddy Guy - Done Got Old
Buddy Guy - Baby Please Don't Leave Me
I don't listen to everything off every track obviously, but it's a plenty good range to put a headphone through its paces