I usually bring the best recorded music that I enjoy listening to. I see no point in bringing audiophile selections that don't engage me in the music simply because they are good recordings. As Mapman points out, bring a wide variety of material that is representative of the range of music you listen to. I'd disagree that any system should sound good regardless of source material. If your source material is poorly engineered/mixed/recorded there is very little a good system can do to correct any of that. Garbage in = Garbage out. I see no point in bringing poorly recorded music to test, unless it is something you listen to often... I suppose it will tell you what to expect from the system in that specific regard.
I don't know that the best recorded material that I enjoy is necessarily material that you'd enjoy, but here's a few picks.
For hall ambiance and vocal dynamics I like, El Cant de la Sibil La.
For bass, percussion and soundstaging, Qalam Kar, by Trio Chemirani
For leanings towards jazz, bass, piano Achirana
For female vocals, soundstage Holly Cole's tribute to Tom Wates, Temptation
For male vocals selections from either Johnny Cash or Greg Brown.
For stark, solo violin Bach Works for Violin Solo, by Lara St. John
I don't listen to much densely textured dynamic music such as Rock or Orchestral so I tend not to bring anything in that realm. If I did I'd probably choose something from Beck or Radiohead.
I don't know that the best recorded material that I enjoy is necessarily material that you'd enjoy, but here's a few picks.
For hall ambiance and vocal dynamics I like, El Cant de la Sibil La.
For bass, percussion and soundstaging, Qalam Kar, by Trio Chemirani
For leanings towards jazz, bass, piano Achirana
For female vocals, soundstage Holly Cole's tribute to Tom Wates, Temptation
For male vocals selections from either Johnny Cash or Greg Brown.
For stark, solo violin Bach Works for Violin Solo, by Lara St. John
I don't listen to much densely textured dynamic music such as Rock or Orchestral so I tend not to bring anything in that realm. If I did I'd probably choose something from Beck or Radiohead.