Top two most important sound qualities

Dear @gladmo : Transient response/dynamic power ( both directly telated and we can’t aisle each from the other) and very very low every kind of room/system developed distortions.

Which the main difference between live MUSIC and home reproduced sounds?:

for me precisely transient response that develops the MUSIC dynamic power and with dynamic power I’m not refering to SPL. Each instrument played at any SPL has its own dynamic power. Transient response/dynamic power is what develops the overall natural tone color in live MUSIC where between you and the MUSIC source exist almost only the air. For me all the audiophile adjectives for any room/system characteristics comes from there added by several kind of distortions that puts several kind of " colorations " to the whole room/system tone " color ".

To stay truer to the recorded source we need those characteristics before looking for any other. We need to put at minimum evry kind of distortion developed at each link in the room/syastem chain, it helps. 

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.

To start with, without rhythm, there is no music.  Timing is everything to music (just a single tone repeated at an interval can be considered music whereas random sounds do not constitute music).  So, number one, the audio system has to maintain a good semblance of rhythm.  

Second, for me is the palpability of the sound, primarily mid-range where 90% of the music occurs.  

After that, it's your choice also dependent on type of music.  

@rauliruegas Yes, I chose tonality + clarity, and clarity is primarily a consequence of minimized distortion. Cheers

Great post.  Obviously difficult to narrow it to two. I choose tonality and dynamics 

Tonality and clarity. Next I'd say vivid while letting your shoulders release and relax.