What is your goto reference recording

I also use a CD I burned with many familiar but different pieces of music.  I think that Paul Desmond's alto sax on Take Five is a very good indicator of whether a speaker will exhibit objectionable harshness later on, BTW.  Other pieces include male vocals, female vocals, solo piano, and some other esoteric stuff I like like Lambchop.  
Having stuff on 1 CD saves the distraction of getting up and changing CDs or LPs.  

Zappa-Apostrophe

One of my go-to records for set up and dialing in is a standard issue early pressing of Janis Ian’s Between the Lines- has lot’s of the stuff you’d likely use to check sound- female voice, strings (real), some orchestral parts, some acoustic, some deep bass and a lot of variety among the tracks. I have a test approval pressing that I acquired and it doesn’t sound any different than the standard issue Columbias from the original era of release. RL mastered it originally. It's a good sounding 'standard' record, nothing "audiophile" about it, so it's a better reference than something that is spectacular for the purposes of set up. 

Manger demo CD....various genres and a torture track at the end.  
Dali CD vol 1 with the famous Hugh Masekela song "Stimela".

For analog testing Flowers in the Dirt album by Paul McCartney and Lost In Sound by Yusef Lateef.
For digital testing Bloodletting by Concrete Blond esp. The song Tomorrow Wendy and Pangea by Miles Davis.